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Available in 34 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-34" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">34 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Chroom(VI)oksied" title="Chroom(VI)oksied – Afrikaans" lang="af" hreflang="af" data-title="Chroom(VI)oksied" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%83%D8%B3%D9%8A%D8%AF_%D8%A7%D9%84%D9%83%D8%B1%D9%88%D9%85_%D8%A7%D9%84%D8%B3%D8%AF%D8%A7%D8%B3%D9%8A" title="أكسيد الكروم السداسي – Arabic" lang="ar" hreflang="ar" data-title="أكسيد الكروم السداسي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Xrom(VI)oksid" title="Xrom(VI)oksid – Azerbaijani" lang="az" hreflang="az" data-title="Xrom(VI)oksid" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%AA%D8%B1%DB%8C%D8%A7%D9%88%DA%A9%D8%B3%DB%8C%D8%AF_%DA%A9%D9%88%D8%B1%D9%88%D9%85" title="تریاوکسید کوروم – South Azerbaijani" lang="azb" hreflang="azb" data-title="تریاوکسید کوروم" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Oxid_chromov%C3%BD" title="Oxid chromový – Czech" lang="cs" hreflang="cs" data-title="Oxid chromový" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Chrom(VI)-oxid" title="Chrom(VI)-oxid – German" lang="de" hreflang="de" data-title="Chrom(VI)-oxid" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A4%CF%81%CE%B9%CE%BF%CE%BE%CE%B5%CE%AF%CE%B4%CE%B9%CE%BF_%CF%84%CE%BF%CF%85_%CF%87%CF%81%CF%89%CE%BC%CE%AF%CE%BF%CF%85" title="Τριοξείδιο του χρωμίου – Greek" lang="el" hreflang="el" data-title="Τριοξείδιο του χρωμίου" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tri%C3%B3xido_de_cromo" title="Trióxido de cromo – Spanish" lang="es" hreflang="es" data-title="Trióxido de cromo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%A9%D8%B1%D9%88%D9%85_%D8%AA%D8%B1%DB%8C%E2%80%8C%D8%A7%DA%A9%D8%B3%DB%8C%D8%AF" title="کروم تری‌اکسید – Persian" lang="fa" hreflang="fa" data-title="کروم تری‌اکسید" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Trioxyde_de_chrome" title="Trioxyde de chrome – French" lang="fr" hreflang="fr" data-title="Trioxyde de chrome" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%82%BC%EC%82%B0%ED%99%94_%ED%81%AC%EB%A1%9C%EB%AE%B4" title="삼산화 크로뮴 – Korean" lang="ko" hreflang="ko" data-title="삼산화 크로뮴" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%94%D6%80%D5%B8%D5%B4%D5%A1%D5%AF%D5%A1%D5%B6_%D5%A1%D5%B6%D5%B0%D5%AB%D5%A4%D6%80%D5%AB%D5%A4" title="Քրոմական անհիդրիդ – Armenian" lang="hy" hreflang="hy" data-title="Քրոմական անհիդրիդ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kromium_trioksida" title="Kromium trioksida – Indonesian" lang="id" hreflang="id" data-title="Kromium trioksida" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Triossido_di_cromo" title="Triossido di cromo – Italian" lang="it" hreflang="it" data-title="Triossido di cromo" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Hroma(VI)_oks%C4%ABds" title="Hroma(VI) oksīds – Latvian" lang="lv" hreflang="lv" data-title="Hroma(VI) oksīds" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kr%C3%B3m-trioxid" title="Króm-trioxid – Hungarian" lang="hu" hreflang="hu" data-title="Króm-trioxid" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A5%D1%80%D0%BE%D0%BC_%D1%82%D1%80%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Хром триоксид – Macedonian" lang="mk" hreflang="mk" data-title="Хром триоксид" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Chroom(VI)oxide" title="Chroom(VI)oxide – Dutch" lang="nl" hreflang="nl" data-title="Chroom(VI)oxide" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%85%B8%E5%8C%96%E3%82%AF%E3%83%AD%E3%83%A0(VI)" title="酸化クロム(VI) – Japanese" lang="ja" hreflang="ja" data-title="酸化クロム(VI)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Tlenek_chromu(VI)" title="Tlenek chromu(VI) – Polish" lang="pl" hreflang="pl" data-title="Tlenek chromu(VI)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tri%C3%B3xido_de_cromo" title="Trióxido de cromo – Portuguese" lang="pt" hreflang="pt" data-title="Trióxido de cromo" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Trioxid_de_crom" title="Trioxid de crom – Romanian" lang="ro" hreflang="ro" data-title="Trioxid de crom" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B4_%D1%85%D1%80%D0%BE%D0%BC%D0%B0(VI)" title="Оксид хрома(VI) – Russian" lang="ru" hreflang="ru" data-title="Оксид хрома(VI)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Chromium(VI)_oxide" title="Chromium(VI) oxide – Simple English" lang="en-simple" hreflang="en-simple" data-title="Chromium(VI) oxide" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A5%D1%80%D0%BE%D0%BC-%D1%82%D1%80%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Хром-триоксид – Serbian" lang="sr" hreflang="sr" data-title="Хром-триоксид" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Hrom_trioksid" title="Hrom trioksid – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Hrom trioksid" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kromitrioksidi" title="Kromitrioksidi – Finnish" lang="fi" hreflang="fi" data-title="Kromitrioksidi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Kromtrioxid" title="Kromtrioxid – Swedish" lang="sv" hreflang="sv" data-title="Kromtrioxid" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AF%81%E0%AE%B0%E0%AF%8B%E0%AE%AE%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D_%E0%AE%AE%E0%AF%82%E0%AE%B5%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%9A%E0%AF%88%E0%AE%9F%E0%AF%81" title="குரோமியம் மூவாக்சைடு – Tamil" lang="ta" hreflang="ta" data-title="குரோமியம் மூவாக்சைடு" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%81%D0%B8%D0%B4_%D1%85%D1%80%D0%BE%D0%BC%D1%83(VI)" title="Оксид хрому(VI) – Ukrainian" lang="uk" hreflang="uk" data-title="Оксид хрому(VI)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Chromi(VI)_oxide" title="Chromi(VI) oxide – Vietnamese" lang="vi" hreflang="vi" data-title="Chromi(VI) oxide" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/Tri%E1%BB%8D%CC%81ks%C3%ADd%C3%AC_kr%C3%B3m%C3%AD%E1%BB%8D%CC%80m%C3%B9" title="Triọ́ksídì krómíọ̀mù – Yoruba" lang="yo" hreflang="yo" data-title="Triọ́ksídì krómíọ̀mù" data-language-autonym="Yorùbá" data-language-local-name="Yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E4%B8%89%E6%B0%A7%E5%8C%96%E9%89%BB" title="三氧化鉻 – Cantonese" lang="yue" hreflang="yue" data-title="三氧化鉻" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E4%B8%89%E6%B0%A7%E5%8C%96%E9%93%AC" title="三氧化铬 – Chinese" lang="zh" hreflang="zh" data-title="三氧化铬" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q931335#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet 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figure:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent){background:var(--background-color-inverted,#f8f9fa)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ib-chembox figure:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent){background:var(--background-color-inverted,#f8f9fa)}}</style> <table class="infobox ib-chembox"> <caption>Chromium trioxide </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center bg-transparent" typeof="mw:File"><a href="/wiki/File:CrO3-from-xtal-1970-bulk-3D-balls.png" class="mw-file-description" title="Ball-and-stick model of chromium trioxide"><img alt="Ball-and-stick model of chromium trioxide" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/CrO3-from-xtal-1970-bulk-3D-balls.png/200px-CrO3-from-xtal-1970-bulk-3D-balls.png" decoding="async" width="200" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/CrO3-from-xtal-1970-bulk-3D-balls.png/300px-CrO3-from-xtal-1970-bulk-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/CrO3-from-xtal-1970-bulk-3D-balls.png/400px-CrO3-from-xtal-1970-bulk-3D-balls.png 2x" data-file-width="2000" data-file-height="1559" /></a><figcaption>Ball-and-stick model of chromium trioxide</figcaption></figure><div style="text-align:center;"><style data-mw-deduplicate="TemplateStyles:r981673959">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}</style><div class="legend"><span class="legend-color mw-no-invert" style="background-color:rgb(158, 176, 224); color:black;-webkit-print-color-adjust: exact; print-color-adjust: exact;"> </span> <a href="/wiki/Chromium" title="Chromium">Chromium</a>, Cr</div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959" /><div class="legend"><span class="legend-color mw-no-invert" style="background-color:red; color:black;-webkit-print-color-adjust: exact; print-color-adjust: exact;"> </span> <a href="/wiki/Oxygen" title="Oxygen">Oxygen</a>, O</div></div> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Chromium(VI)_oxide.jpg" class="mw-file-description" title="Powder of chromium trioxide"><img alt="Powder of chromium trioxide" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Chromium%28VI%29_oxide.jpg/220px-Chromium%28VI%29_oxide.jpg" decoding="async" width="220" height="218" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Chromium%28VI%29_oxide.jpg/330px-Chromium%28VI%29_oxide.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Chromium%28VI%29_oxide.jpg/440px-Chromium%28VI%29_oxide.jpg 2x" data-file-width="720" data-file-height="714" /></a><figcaption>Powder of chromium trioxide</figcaption></figure> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Names </th></tr> <tr> <td colspan="2" style="text-align:left;"><a href="/wiki/Chemical_nomenclature" title="Chemical nomenclature">IUPAC name</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Chromium trioxide</div> </td></tr> <tr> <td colspan="2" style="text-align:left;">Other names <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Chromic anhydride, Chromium(VI) oxide, Chromic acid (<a href="/wiki/Misnomer" title="Misnomer">misnomer</a>)</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=1333-82-0">1333-82-0</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=O%3D%5BCr%5D%28%3DO%29%3DO">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChEBI" title="ChEBI">ChEBI</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="www.ebi.ac.uk"><a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/chebi/searchId.do?chebiId=48240">CHEBI:48240</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.14212.html">14212</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ECHA_InfoCard" class="mw-redirect" title="ECHA InfoCard"><span title="echa.europa.eu">ECHA InfoCard</span></a> </td> <td><a rel="nofollow" class="external text" href="https://echa.europa.eu/substance-information/-/substanceinfo/100.014.189">100.014.189</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q931335#P2566" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/14915">14915</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/RTECS" class="mw-redirect" title="RTECS">RTECS number</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li>GB6650000</li></ul></div> </td></tr> <tr> <td><a href="/wiki/Unique_Ingredient_Identifier" title="Unique Ingredient Identifier">UNII</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="precision.fda.gov"><a rel="nofollow" class="external text" href="https://precision.fda.gov/uniisearch/srs/unii/8LV49809UC">8LV49809UC</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><a href="/wiki/UN_number" title="UN number">UN number</a> </td> <td>1463 </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CompTox_Chemicals_Dashboard" title="CompTox Chemicals Dashboard">CompTox Dashboard</a> <span style="font-weight:normal">(<abbr title="U.S. Environmental Protection Agency">EPA</abbr>)</span></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="comptox.epa.gov"><a rel="nofollow" class="external text" href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID0040125">DTXSID0040125</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q931335#P3117" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/Cr.3O<sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: WGLPBDUCMAPZCE-UHFFFAOYSA-N<sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></div></div></li><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1/Cr.3O/rCrO3/c2-1(3)4</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: WGLPBDUCMAPZCE-YFSAMUSXAF</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">O=[Cr](=O)=O</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td><span title="Chromium">Cr</span><span title="Oxygen">O</span><sub>3</sub> </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7001999930000000000♠"></span>99.993</span> g·mol<sup>−1</sup>   </td></tr> <tr> <td>Appearance </td> <td>Dark red granular solid, <a href="/wiki/Deliquescent" class="mw-redirect" title="Deliquescent">deliquescent</a> </td></tr> <tr> <td><a href="/wiki/Odor" title="Odor">Odor</a> </td> <td>Odorless </td></tr> <tr> <td><a href="/wiki/Density" title="Density">Density</a> </td> <td>2.7 g/cm<sup>3</sup> (20 °C)<sup id="cite_ref-crc_1-0" class="reference"><a href="#cite_note-crc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><a href="/wiki/Melting_point" title="Melting point">Melting point</a> </td> <td>197 °C (387 °F; 470 K)<sup id="cite_ref-crc_1-4" class="reference"><a href="#cite_note-crc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><a href="/wiki/Boiling_point" title="Boiling point">Boiling point</a> </td> <td>250 °C (482 °F; 523 K) <br /> decomposes<sup id="cite_ref-crc_1-1" class="reference"><a href="#cite_note-crc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Aqueous_solution" title="Aqueous solution">Solubility in water</a></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li>164.8 g/(100 mL) (0 °C)</li><li>169 g/(100 mL) (25 °C)<sup id="cite_ref-crc_1-2" class="reference"><a href="#cite_note-crc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li><li>172.6 g/(100 mL) (40 °C)</li><li>198.1 g/(100 mL) (100 °C)<sup id="cite_ref-sioc_2-0" class="reference"><a href="#cite_note-sioc-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li></ul></div> </td></tr> <tr> <td><a href="/wiki/Solubility" title="Solubility">Solubility</a> </td> <td>Soluble in <a href="/wiki/Sulfuric_acid" title="Sulfuric acid"><style data-mw-deduplicate="TemplateStyles:r1123817410">'"`UNIQ--templatestyles-0000001B-QINU`"'</style><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">4</sub></span></a>, <a href="/wiki/Nitric_acid" title="Nitric acid"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">HNO<sub class="template-chem2-sub">3</sub></span></a>, <a href="/wiki/Diethyl_ether" title="Diethyl ether"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">(CH<sub class="template-chem2-sub">3</sub>CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub>O</span></a>, <a href="/wiki/Acetic_acid" title="Acetic acid"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CH<sub class="template-chem2-sub">3</sub>COOH</span></a>, <a href="/wiki/Acetone" title="Acetone"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">(CH<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">2</sub>CO</span></a> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Magnetic_susceptibility" title="Magnetic susceptibility">Magnetic susceptibility</a> (χ)</div> </td> <td>+40·10<sup>−6</sup> cm<sup>3</sup>/mol<sup id="cite_ref-crc_1-3" class="reference"><a href="#cite_note-crc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Thermochemistry </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Standard_molar_entropy" title="Standard molar entropy">Std molar<br />entropy</a> <span style="font-size:112%;">(<i>S</i><sup>⦵</sup><sub>298</sub>)</span></div> </td> <td>73.2 J/(mol·K)<sup id="cite_ref-chemister_3-0" class="reference"><a href="#cite_note-chemister-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Standard_enthalpy_change_of_formation" class="mw-redirect" title="Standard enthalpy change of formation">Std enthalpy of<br />formation</a> <span style="font-size:112%;">(Δ<sub>f</sub><i>H</i><sup>⦵</sup><sub>298</sub>)</span></div> </td> <td>−589.3 kJ/mol<sup id="cite_ref-pphoic_4-0" class="reference"><a href="#cite_note-pphoic-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Hazards </th></tr> <tr> <td colspan="2" style="text-align:left; background-color:#eaeaea;color:inherit;"><a href="/wiki/Globally_Harmonized_System_of_Classification_and_Labelling_of_Chemicals" title="Globally Harmonized System of Classification and Labelling of Chemicals"><b>GHS</b> labelling</a>: </td></tr> <tr> <td style="padding-left:1em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/GHS_hazard_pictograms" title="GHS hazard pictograms">Pictograms</a></div> </td> <td><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-rondflam.svg" class="mw-file-description" title="GHS03: Oxidizing"><img alt="GHS03: Oxidizing" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/GHS-pictogram-rondflam.svg/50px-GHS-pictogram-rondflam.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/GHS-pictogram-rondflam.svg/75px-GHS-pictogram-rondflam.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/GHS-pictogram-rondflam.svg/100px-GHS-pictogram-rondflam.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-acid.svg" class="mw-file-description" title="GHS05: Corrosive"><img alt="GHS05: Corrosive" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/50px-GHS-pictogram-acid.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/75px-GHS-pictogram-acid.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/100px-GHS-pictogram-acid.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-skull.svg" class="mw-file-description" title="GHS06: Toxic"><img alt="GHS06: Toxic" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/GHS-pictogram-skull.svg/50px-GHS-pictogram-skull.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/GHS-pictogram-skull.svg/75px-GHS-pictogram-skull.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/GHS-pictogram-skull.svg/100px-GHS-pictogram-skull.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-silhouette.svg" class="mw-file-description" title="GHS08: Health hazard"><img alt="GHS08: Health hazard" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/GHS-pictogram-silhouette.svg/50px-GHS-pictogram-silhouette.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/GHS-pictogram-silhouette.svg/75px-GHS-pictogram-silhouette.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/GHS-pictogram-silhouette.svg/100px-GHS-pictogram-silhouette.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-pollu.svg" class="mw-file-description" title="GHS09: Environmental hazard"><img alt="GHS09: Environmental hazard" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/GHS-pictogram-pollu.svg/50px-GHS-pictogram-pollu.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/GHS-pictogram-pollu.svg/75px-GHS-pictogram-pollu.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/GHS-pictogram-pollu.svg/100px-GHS-pictogram-pollu.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span><sup id="cite_ref-sigma_5-0" class="reference"><a href="#cite_note-sigma-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td style="padding-left:1em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Globally_Harmonized_System_of_Classification_and_Labelling_of_Chemicals#Signal_word" title="Globally Harmonized System of Classification and Labelling of Chemicals">Signal word</a></div> </td> <td><b>Danger</b> </td></tr> <tr> <td style="padding-left:1em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/GHS_hazard_statements" title="GHS hazard statements">Hazard statements</a></div> </td> <td><abbr class="abbr" title="H271: May cause fire or explosion: strong oxidizer">H271</abbr>, <abbr class="abbr" title="H301+H311: Toxic if swallowed or in contact with skin">H301+H311</abbr>, <abbr class="abbr" title="H314: Causes severe skin burns and eye damage">H314</abbr>, <abbr class="abbr" title="H317: May cause an allergic skin reaction">H317</abbr>, <abbr class="abbr" title="H330: Fatal if inhaled">H330</abbr>, <abbr class="abbr" title="H334: May cause allergy or asthma symptoms of breathing difficulties if inhaled">H334</abbr>, <abbr class="abbr" title="H335: May cause respiratory irritation">H335</abbr>, <abbr class="abbr" title="H340: May cause genetic defects">H340</abbr>, <abbr class="abbr" title="H350: May cause cancer">H350</abbr>, <abbr class="abbr" title="H361f: Suspected of damaging fertility">H361f</abbr>, <abbr class="abbr" title="H372: Causes damage to organs through prolonged or repeated exposure">H372</abbr>, <abbr class="abbr" title="H410: Very toxic to aquatic life with long lasting effects">H410</abbr><sup id="cite_ref-sigma_5-1" class="reference"><a href="#cite_note-sigma-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td style="padding-left:1em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/GHS_precautionary_statements" title="GHS precautionary statements">Precautionary statements</a></div> </td> <td><abbr class="abbr" title="P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.">P210</abbr>, <abbr class="abbr" title="P260: Do not breathe dust/fume/gas/mist/vapours/spray.">P260</abbr>, <abbr class="abbr" title="P280: Wear protective gloves/protective clothing/eye protection/face protection.">P280</abbr>, <abbr class="abbr" title="P303+P361+P353: IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water [or shower].">P303+P361+P353</abbr>, <abbr class="abbr" title="P304+P340+P310: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician.">P304+P340+P310</abbr>, <abbr class="abbr" title="P305+P351+P338: IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.">P305+P351+P338</abbr><sup id="cite_ref-sigma_5-2" class="reference"><a href="#cite_note-sigma-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><a href="/wiki/NFPA_704" title="NFPA 704"><b>NFPA 704</b></a> (fire diamond) </td> <td><style data-mw-deduplicate="TemplateStyles:r1170367383">.mw-parser-output .nfpa-704-diamond-ref{float:right;padding:1px;text-align:right}.mw-parser-output .nfpa-704-diamond-container{width:82px;font-family:sans-serif;margin:0 auto}.mw-parser-output .nfpa-704-diamond-container-ref{float:left;margin-left:1em}.mw-parser-output .nfpa-704-diamond-images{float:left;font-size:20px;text-align:center;position:relative;height:80px;width:80px;padding:1px}.mw-parser-output .nfpa-704-diamond-map{position:absolute;height:80px;width:80px}.mw-parser-output .nfpa-704-diamond .noresize{margin:0 auto}.mw-parser-output .nfpa-704-diamond-code{line-height:1em;text-align:center;position:absolute}.mw-parser-output .nfpa-704-diamond-code>a{color:black}.mw-parser-output .nfpa-704-diamond-blue{width:13px;top:31px;left:15px}.mw-parser-output .nfpa-704-diamond-red{width:12px;top:12px;left:35px}.mw-parser-output .nfpa-704-diamond-yellow{width:13px;top:31px;left:54px}.mw-parser-output .nfpa-704-diamond-white-image{position:relative;top:51px;left:0}.mw-parser-output .nfpa-704-diamond-white-text{vertical-align:middle;text-align:center;line-height:80%;position:absolute;top:52px}.mw-parser-output .nfpa-704-diamond-white-text a>span{position:absolute;color:black}.mw-parser-output .nfpa-704-diamond-white-wors{font-size:15px;width:23px;left:29px}.mw-parser-output .nfpa-704-diamond-white-wox{font-size:15px;font-stretch:condensed;width:21px;line-height:80%;top:-4px;left:29px}.mw-parser-output .nfpa-704-diamond-white-abcp{font-size:13.5px;font-stretch:condensed;width:28px;left:26px}.mw-parser-output .nfpa-704-diamond-white-ac{font-size:10px;width:30px;left:25px}.mw-parser-output .nfpa-704-diamond-white-strike{text-decoration:line-through}</style><div class="nfpa-704-diamond notheme"><div class="nfpa-74-diamond-refs"><sup id="cite_ref-chemicalland21_6-1" class="reference"><a href="#cite_note-chemicalland21-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></div><div class="nfpa-704-diamond-container nfpa-704-diamond-container-ref"><div class="nfpa-704-diamond-images nounderlines"> <div class="nfpa-704-diamond-map"><figure class="noresize" typeof="mw:File"><span><img alt="NFPA 704 four-colored diamond" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/80px-NFPA_704.svg.png" decoding="async" width="80" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/120px-NFPA_704.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/160px-NFPA_704.svg.png 2x" data-file-width="512" data-file-height="512" usemap="#ImageMap_5dbc854220f9db7c" /></span><map name="ImageMap_5dbc854220f9db7c"><area href="/wiki/NFPA_704#Blue" shape="poly" coords="23,23,47,47,23,70,0,47" alt="Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas" title="Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas" /><area href="/wiki/NFPA_704#Red" shape="poly" coords="47,0,70,23,47,47,23,23" alt="Flammability 0: Will not burn. E.g. water" title="Flammability 0: Will not burn. E.g. water" /><area href="/wiki/NFPA_704#Yellow" shape="poly" coords="70,23,94,47,70,70,47,47" alt="Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus" title="Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus" /><area href="/wiki/NFPA_704#White" shape="poly" coords="47,47,70,70,47,94,23,70" alt="Special hazard OX: Oxidizer. E.g. potassium perchlorate" title="Special hazard OX: Oxidizer. E.g. potassium perchlorate" /></map><figcaption></figcaption></figure></div><div class="nfpa-704-diamond-code nfpa-704-diamond-blue"> <a href="/wiki/NFPA_704#Blue" title="NFPA 704"><span title="Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas" class="notheme mw-no-invert">4</span></a></div><div class="nfpa-704-diamond-code nfpa-704-diamond-red"> <a href="/wiki/NFPA_704#Red" title="NFPA 704"><span title="Flammability 0: Will not burn. E.g. water" class="notheme mw-no-invert">0</span></a></div><div class="nfpa-704-diamond-code nfpa-704-diamond-yellow"> <a href="/wiki/NFPA_704#Yellow" title="NFPA 704"><span title="Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus" class="notheme mw-no-invert">2</span></a></div><div class="nfpa-704-diamond-white-text mw-no-invert"><a href="/wiki/NFPA_704#White" title="NFPA 704"><span class="nfpa-704-diamond-white-wors" title="Special hazard OX: Oxidizer. E.g. potassium perchlorate">OX</span></a></div></div></div></div> </td></tr> <tr> <td colspan="2" style="text-align:left; background-color:#eaeaea;color:inherit;"><b>Lethal dose</b> or concentration (LD, LC): </td></tr> <tr> <td style="padding-left:1em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">LD<sub>50</sub> (<a href="/wiki/Lethal_dose#LD50" title="Lethal dose">median dose</a>)</div> </td> <td>80 mg/kg (rats, oral)<sup id="cite_ref-chemicalland21_6-0" class="reference"><a href="#cite_note-chemicalland21-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><a href="/wiki/Safety_data_sheet" title="Safety data sheet">Safety data sheet</a> (SDS) </td> <td><a rel="nofollow" class="external text" href="http://www.inchem.org/documents/icsc/icsc/eics1194.htm">ICSC 1194</a> </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; color:inherit; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"><div style="text-align:center;"><span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/12px-Yes_check.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/18px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/24px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span> <span class="reflink plainlinks nourlexpansion"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Special:ComparePages&rev1=477001582&page2=Chromium+trioxide">verify</a></span> (<a href="/wiki/Wikipedia:WikiProject_Chemicals/Chembox_validation" title="Wikipedia:WikiProject Chemicals/Chembox validation">what is</a> <sup><span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span><span typeof="mw:File"><span><img alt="☒" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/7px-X_mark.svg.png" decoding="async" width="7" height="8" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/14px-X_mark.svg.png 2x" data-file-width="525" data-file-height="600" /></span></span><span style="display:none">N</span></sup> ?) </div></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>Chromium trioxide</b> (also known as <b>chromium(VI) oxide</b> or <b>chromic anhydride</b>) is an <a href="/wiki/Inorganic_compound" title="Inorganic compound">inorganic compound</a> with the <a href="/wiki/Chemical_formula" title="Chemical formula">formula</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CrO<sub class="template-chem2-sub">3</sub></span>. It is the <a href="/wiki/Acidic_oxide" title="Acidic oxide">acidic anhydride</a> of <a href="/wiki/Chromic_acid" title="Chromic acid">chromic acid</a>, and is sometimes marketed under the same name.<sup id="cite_ref-chemicalland21_6-2" class="reference"><a href="#cite_note-chemicalland21-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> This compound is a dark-purple <a href="/wiki/Solid" title="Solid">solid</a> under anhydrous conditions and bright orange when wet. The substance dissolves in water accompanied by hydrolysis.<sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify"><span title="the wording is arcane - what does it mean? (June 2023)">clarification needed</span></a></i>]</sup> Millions of kilograms are produced annually, mainly for <a href="/wiki/Electroplating" title="Electroplating">electroplating</a>.<sup id="cite_ref-ullmanns_7-0" class="reference"><a href="#cite_note-ullmanns-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Chromium trioxide is a powerful oxidiser, a <a href="/wiki/Mutagen" title="Mutagen">mutagen</a>, and a <a href="/wiki/Carcinogen" title="Carcinogen">carcinogen</a>.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Production,_structure,_and_basic_reactions"><span id="Production.2C_structure.2C_and_basic_reactions"></span>Production, structure, and basic reactions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=1" title="Edit section: Production, structure, and basic reactions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Chromium trioxide is generated by treating <a href="/wiki/Sodium_dichromate" title="Sodium dichromate">sodium dichromate</a> with <a href="/wiki/Sulfuric_acid" title="Sulfuric acid">sulfuric acid</a>:<sup id="cite_ref-chemicalland21_6-3" class="reference"><a href="#cite_note-chemicalland21-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">4</sub> + Na<sub class="template-chem2-sub">2</sub>Cr<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">7</sub> → 2 CrO<sub class="template-chem2-sub">3</sub> + Na<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">4</sub> + H<sub class="template-chem2-sub">2</sub>O</span></dd></dl> <p>Approximately 100,000 tonnes are produced annually by this or similar routes.<sup id="cite_ref-ullmanns_7-1" class="reference"><a href="#cite_note-ullmanns-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p> The solid consists of chains of tetrahedrally coordinated chromium atoms that share vertices. Each <a href="/wiki/Chromium" title="Chromium">chromium</a> center therefore shares two oxygen centers with neighbors. Two oxygen atoms are not shared, giving an overall stoichiometry of 1:3.<sup id="cite_ref-cotton_9-0" class="reference"><a href="#cite_note-cotton-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-adb_10-0" class="reference"><a href="#cite_note-adb-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:CrO3-from-xtal-1970-chain-3D-balls.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/CrO3-from-xtal-1970-chain-3D-balls.png/450px-CrO3-from-xtal-1970-chain-3D-balls.png" decoding="async" width="450" height="102" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/CrO3-from-xtal-1970-chain-3D-balls.png/675px-CrO3-from-xtal-1970-chain-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/86/CrO3-from-xtal-1970-chain-3D-balls.png/900px-CrO3-from-xtal-1970-chain-3D-balls.png 2x" data-file-width="2000" data-file-height="452" /></a><figcaption>Ball-and-stick model of chains in the crystal structure of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CrO<sub class="template-chem2-sub">3</sub></span><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959" /><div class="legend"><span class="legend-color mw-no-invert" style="background-color:rgb(158, 176, 224); color:black;-webkit-print-color-adjust: exact; print-color-adjust: exact;"> </span> <a href="/wiki/Chromium" title="Chromium">Chromium</a>, Cr</div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959" /><div class="legend"><span class="legend-color mw-no-invert" style="background-color:red; color:black;-webkit-print-color-adjust: exact; print-color-adjust: exact;"> </span> <a href="/wiki/Oxygen" title="Oxygen">Oxygen</a>, O</div></figcaption></figure> <p>The structure of monomeric <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CrO<sub class="template-chem2-sub">3</sub></span> has been calculated using <a href="/wiki/Density_functional_theory" title="Density functional theory">density functional theory</a>, and is predicted to be <a href="/wiki/Trigonal_pyramidal_molecular_geometry" title="Trigonal pyramidal molecular geometry">pyramidal</a> (<a href="/wiki/Molecular_symmetry#Point_Group" title="Molecular symmetry">point group</a> C<sub>3v</sub>) rather than <a href="/wiki/Trigonal_planar_molecular_geometry" title="Trigonal planar molecular geometry">planar</a> (point group D<sub>3h</sub>).<sup id="cite_ref-cdoi_11-0" class="reference"><a href="#cite_note-cdoi-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <dl><dd><span typeof="mw:File"><a href="/wiki/File:CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png" class="mw-file-description" title="Ball-and-stick model of the DFT-calculated structure of the CrO3 monomer"><img alt="Ball-and-stick model of the DFT-calculated structure of the CrO3 monomer" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png/150px-CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png" decoding="async" width="150" height="92" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png/225px-CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c7/CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png/300px-CrO3-monomer-from-DFT-PW91-aD-2008-side-3D-balls.png 2x" data-file-width="2000" data-file-height="1223" /></a></span></dd></dl> <p>Chromium trioxide decomposes above 197 °C, liberating oxygen and eventually giving <a href="/wiki/Chromium(III)_oxide" title="Chromium(III) oxide"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub></span></a>: </p> <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">4 CrO<sub class="template-chem2-sub">3</sub> → 2 Cr<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub> + 3 O<sub class="template-chem2-sub">2</sub></span></dd></dl> <p>It is used in <a href="/wiki/Organic_synthesis" title="Organic synthesis">organic synthesis</a> as an oxidant, often as a solution in <a href="/wiki/Acetic_acid" title="Acetic acid">acetic acid</a>,<sup id="cite_ref-cotton_9-1" class="reference"><a href="#cite_note-cotton-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> or <a href="/wiki/Acetone" title="Acetone">acetone</a> in the case of the <a href="/wiki/Jones_oxidation" title="Jones oxidation">Jones oxidation</a>. In these oxidations, the Cr(VI) converts <a href="/wiki/Primary_alcohol" title="Primary alcohol">primary alcohols</a> to the corresponding <a href="/wiki/Carboxylic_acid" title="Carboxylic acid">carboxylic acids</a> and <a href="/wiki/Secondary_alcohol" class="mw-redirect" title="Secondary alcohol">secondary alcohols</a> to <a href="/wiki/Ketone" title="Ketone">ketones</a>. The reactions are shown below: </p> <ul><li>Primary alcohols to carboxylic acids <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">4 CrO<sub class="template-chem2-sub">3</sub> + 3 RCH<sub class="template-chem2-sub">2</sub>OH + 12 H<sup class="template-chem2-sup">+</sup> → 3 RCOOH + 4 Cr<sup>3+</sup> + 9 H<sub class="template-chem2-sub">2</sub>O</span></dd></dl></li> <li>Secondary alcohols to ketones <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">2 CrO<sub class="template-chem2-sub">3</sub> + 3 R<sub class="template-chem2-sub">2</sub>CHOH + 6 H<sup class="template-chem2-sup">+</sup> → 3 R<sub class="template-chem2-sub">2</sub>C=O + 2 Cr<sup>3+</sup> + 6 H<sub class="template-chem2-sub">2</sub>O</span></dd></dl></li></ul> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=2" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Chromium trioxide is mainly used in <a href="/wiki/Chrome_plating" title="Chrome plating">chrome plating</a>. It is typically employed with additives that affect the plating process but do not react with the trioxide. The trioxide reacts with <a href="/wiki/Cadmium" title="Cadmium">cadmium</a>, <a href="/wiki/Zinc" title="Zinc">zinc</a>, and other metals to generate passivating chromate films that resist <a href="/wiki/Corrosion" title="Corrosion">corrosion</a>. It is also used in the production of <a href="/wiki/Synthetic_ruby" class="mw-redirect" title="Synthetic ruby">synthetic rubies</a>. Chromic acid solution is also used in applying types of <a href="/wiki/Anodizing" title="Anodizing">anodic coating</a> to <a href="/wiki/Aluminium" title="Aluminium">aluminium</a>, which are primarily used in aerospace applications. On the International Space Station, it is used to control bacteria growth in the wastewater storage tank. A chromic acid/<a href="/wiki/Phosphoric_acid" title="Phosphoric acid">phosphoric acid</a> solution is also the preferred <a href="/wiki/Stripping_(chemistry)" title="Stripping (chemistry)">stripping agent</a> of anodic coatings of all types. </p> <div class="mw-heading mw-heading2"><h2 id="Safety">Safety</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=3" title="Edit section: Safety"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Chromium trioxide is highly toxic, corrosive, and carcinogenic.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> It is the main example of <a href="/wiki/Hexavalent_chromium" title="Hexavalent chromium">hexavalent chromium</a>, an <a href="/wiki/Environmental_hazard" title="Environmental hazard">environmental hazard</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> The related chromium(III) derivatives are not particularly dangerous; thus, <a href="/wiki/Reductant" class="mw-redirect" title="Reductant">reductants</a> are used to destroy chromium(VI) samples. </p><p>Chromium trioxide, being a powerful oxidizer, will ignite organic materials such as <a href="/wiki/Alcohols" class="mw-redirect" title="Alcohols">alcohols</a> <a href="/wiki/Hypergolic_propellant" title="Hypergolic propellant">on contact</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Images">Images</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=4" title="Edit section: Images"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_potassium_dichromate_and_sulfuric_acid_(1).jpg" class="mw-file-description" title="A concentrated solution of potassium dichromate in water."><img alt="A concentrated solution of potassium dichromate in water." src="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg/80px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg" decoding="async" width="80" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg/120px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/44/Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg/160px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%281%29.jpg 2x" data-file-width="720" data-file-height="1082" /></a></span></div> <div class="gallerytext">A concentrated solution of potassium dichromate in water.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_potassium_dichromate_and_sulfuric_acid_(2).jpg" class="mw-file-description" title="Addition of sulfuric acid to the solution."><img alt="Addition of sulfuric acid to the solution." src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg/80px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg" decoding="async" width="80" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg/119px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg/159px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%282%29.jpg 2x" data-file-width="720" data-file-height="1083" /></a></span></div> <div class="gallerytext">Addition of sulfuric acid to the solution.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_potassium_dichromate_and_sulfuric_acid_(3).jpg" class="mw-file-description" title="Crystallization of chromium trioxide from the reaction."><img alt="Crystallization of chromium trioxide from the reaction." src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg/80px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg" decoding="async" width="80" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg/120px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg/160px-Reaction_between_potassium_dichromate_and_sulfuric_acid_%283%29.jpg 2x" data-file-width="720" data-file-height="1078" /></a></span></div> <div class="gallerytext">Crystallization of chromium trioxide from the reaction.</div> </li> </ul> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_chromium(VI)_oxide_and_ethanol_(1).JPG" class="mw-file-description" title="Reaction between chromium trioxide and ethanol"><img alt="Reaction between chromium trioxide and ethanol" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG/120px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG" decoding="async" width="120" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG/180px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG/240px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%281%29.JPG 2x" data-file-width="5616" data-file-height="3744" /></a></span></div> <div class="gallerytext">Reaction between chromium trioxide and ethanol</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_chromium(VI)_oxide_and_ethanol_(2).JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG/120px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG" decoding="async" width="120" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG/180px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/30/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG/240px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%282%29.JPG 2x" data-file-width="5616" data-file-height="3744" /></a></span></div> <div class="gallerytext"></div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Reaction_between_chromium(VI)_oxide_and_ethanol_(3).JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG/120px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG" decoding="async" width="120" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG/180px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG/240px-Reaction_between_chromium%28VI%29_oxide_and_ethanol_%283%29.JPG 2x" data-file-width="5616" data-file-height="3744" /></a></span></div> <div class="gallerytext"></div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-crc-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-crc_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-crc_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-crc_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-crc_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-crc_1-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFLide2009" class="citation book cs1">Lide, David R., ed. 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"Probing the Electronic and Structural Properties of Chromium Oxide Clusters <span class="chemf nowrap">(CrO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">3</sub></span></span>)<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline"><i>n</i></sub></span></span></span> and (CrO<sub>3</sub>)<sub><i>n</i></sub> (<i>n</i> = 1–5): Photoelectron Spectroscopy and Density Functional Calculations". <i>Journal of the American Chemical Society</i>. <b>130</b> (15): <span class="nowrap">5167–</span>77. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fja077984d">10.1021/ja077984d</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/18327905">18327905</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Probing+the+Electronic+and+Structural+Properties+of+Chromium+Oxide+Clusters+%3Cspan+class%3D%22chemf+nowrap%22%3E%28CrO%3Cspan+class%3D%22nowrap%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1em%3Bfont-size%3A80%25%3Btext-align%3Aleft%22%3E%3Csup+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E%3C%2Fsup%3E%3Cbr+%2F%3E%3Csub+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E3%3C%2Fsub%3E%3C%2Fspan%3E%3C%2Fspan%3E%29%3Cspan+class%3D%22nowrap%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1em%3Bfont-size%3A80%25%3Btext-align%3Aleft%22%3E%3Csup+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E%E2%88%92%3C%2Fsup%3E%3Cbr+%2F%3E%3Csub+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3En%3C%2Fsub%3E%3C%2Fspan%3E%3C%2Fspan%3E%3C%2Fspan%3E+and+%28CrO%3Csub%3E3%3C%2Fsub%3E%29%3Csub%3En%3C%2Fsub%3E+%28n+%3D+1%E2%80%935%29%3A+Photoelectron+Spectroscopy+and+Density+Functional+Calculations&rft.volume=130&rft.issue=15&rft.pages=%3Cspan+class%3D%22nowrap%22%3E5167-%3C%2Fspan%3E77&rft.date=2008&rft_id=info%3Adoi%2F10.1021%2Fja077984d&rft_id=info%3Apmid%2F18327905&rft.aulast=Zhai&rft.aufirst=H.+J.&rft.au=Li%2C+S.&rft.au=Dixon%2C+D.+A.&rft.au=Wang%2C+L.+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChromium+trioxide" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150112092613/http://hazard.com/msds/mf/baker/baker/files/c4400.htm">"Chromium Trioxide (MSDS)"</a>. J. T. Baker. Archived from <a rel="nofollow" class="external text" href="http://hazard.com/msds/mf/baker/baker/files/c4400.htm">the original</a> on 2015-01-12<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-09-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Chromium+Trioxide+%28MSDS%29&rft.pub=J.+T.+Baker&rft_id=http%3A%2F%2Fhazard.com%2Fmsds%2Fmf%2Fbaker%2Fbaker%2Ffiles%2Fc4400.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChromium+trioxide" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text">The environmental impact of hexavalent chromium inspired the 2000 biographical Hollywood movie <i><a href="/wiki/Erin_Brockovich_(film)" title="Erin Brockovich (film)">Erin Brockovich</a></i>.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chromium_trioxide&action=edit&section=6" title="Edit section: External 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class="navbox-group" style="width:1%">Chromium(0)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium_hexacarbonyl" title="Chromium hexacarbonyl"><span class="chemf nowrap">Cr(CO)<sub class="template-chem2-sub">6</sub></span></a></li></ul></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Organochromium(0)_compounds27" scope="row" class="navbox-group" style="width:1%">Organochromium(0) compounds</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <li><a href="/wiki/Bis(benzene)chromium" title="Bis(benzene)chromium"><span class="chemf nowrap">Cr(C<sub class="template-chem2-sub">6</sub>H<sub class="template-chem2-sub">6</sub>)<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/(Benzene)chromium_tricarbonyl" title="(Benzene)chromium tricarbonyl"><span class="chemf nowrap">CrC<sub class="template-chem2-sub">6</sub>H<sub class="template-chem2-sub">6</sub>(CO)<sub class="template-chem2-sub">3</sub></span></a></li> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(I)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium(I)_hydride" title="Chromium(I) hydride">CrH</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Organochromium(I)_compounds27" scope="row" class="navbox-group" style="width:1%">Organochromium(I) compounds</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cyclopentadienylchromium_tricarbonyl_dimer" title="Cyclopentadienylchromium tricarbonyl dimer"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>(C<sub class="template-chem2-sub">5</sub>H<sub class="template-chem2-sub">5</sub>)<sub class="template-chem2-sub">2</sub>(CO)<sub class="template-chem2-sub">6</sub></span></a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(II)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium(II)_hydride" title="Chromium(II) hydride"><span class="chemf nowrap">CrH<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_carbide" title="Chromium(II) carbide"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">3</sub>C<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_oxalate" title="Chromium(II) oxalate"><span class="chemf nowrap">Cr(C<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">4</sub>)</span></a></li> <li><a href="/wiki/Chromium(II)_acetate" title="Chromium(II) acetate"><span class="chemf nowrap">Cr(CH<sub class="template-chem2-sub">3</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_silicide" title="Chromium(II) silicide"><span class="chemf nowrap">CrSi<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_oxide" title="Chromium(II) oxide">CrO</a></li> <li><a href="/wiki/Chromium(II)_sulfide" title="Chromium(II) sulfide">CrS</a></li> <li><a href="/wiki/Chromium(II)_sulfate" title="Chromium(II) sulfate"><span class="chemf nowrap">CrSO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium(II)_selenide" title="Chromium(II) selenide">CrSe</a></li> <li><a href="/wiki/Chromium(II)_fluoride" title="Chromium(II) fluoride"><span class="chemf nowrap">CrF<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_chloride" title="Chromium(II) chloride"><span class="chemf nowrap">CrCl<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_bromide" title="Chromium(II) bromide"><span class="chemf nowrap">CrBr<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(II)_iodide" title="Chromium(II) iodide"><span class="chemf nowrap">CrI<sub class="template-chem2-sub">2</sub></span></a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Organochromium(II)_compounds28" scope="row" class="navbox-group" style="width:1%">Organochromium(II) compounds</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromocene" title="Chromocene"><span class="chemf nowrap">Cr(C<sub class="template-chem2-sub">5</sub>H<sub class="template-chem2-sub">5</sub>)<sub class="template-chem2-sub">2</sub></span></a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(II, III)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium_carbide" class="mw-redirect" title="Chromium carbide"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">3</sub>C<sub class="template-chem2-sub">2</sub></span></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(III)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium(III)_boride" title="Chromium(III) boride">CrB</a></li> <li><a href="/wiki/Chromium(III)_acetate" title="Chromium(III) acetate"><span class="chemf nowrap">[Cr<sub class="template-chem2-sub">3</sub>O(CH<sub class="template-chem2-sub">3</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">6</sub>(H<sub class="template-chem2-sub">2</sub>O)<sub class="template-chem2-sub">3</sub>]<sup class="template-chem2-sup">+</sup>[CH<sub class="template-chem2-sub">3</sub>CO<sub class="template-chem2-sub">2</sub>]<sup class="template-chem2-sup">−</sup></span></a></li> <li><a href="/wiki/Chromium_nitride" title="Chromium nitride">CrN</a></li> <li><a href="/wiki/Chromium_nitrate" class="mw-redirect" title="Chromium nitrate"><span class="chemf nowrap">Cr(NO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_phosphate" title="Chromium(III) phosphate"><span class="chemf nowrap">CrPO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium(III)_oxide" title="Chromium(III) oxide"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_hydroxide" title="Chromium(III) hydroxide"><span class="chemf nowrap">Cr(OH)<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_sulfide" title="Chromium(III) sulfide"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_sulfate" title="Chromium(III) sulfate"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>(SO<sub class="template-chem2-sub">4</sub>)<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_telluride" title="Chromium(III) telluride"><span class="chemf nowrap">Cr<sub class="template-chem2-sub">2</sub>Te<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_fluoride" title="Chromium(III) fluoride"><span class="chemf nowrap">CrF<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_chloride" title="Chromium(III) chloride"><span class="chemf nowrap">CrCl<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_perchlorate" title="Chromium(III) perchlorate"><span class="chemf nowrap">Cr(ClO<sub class="template-chem2-sub">4</sub>)<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_bromide" title="Chromium(III) bromide"><span class="chemf nowrap">CrBr<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(III)_iodide" title="Chromium(III) iodide"><span class="chemf nowrap">CrI<sub class="template-chem2-sub">3</sub></span></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(IV)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium(IV)_silicide" title="Chromium(IV) silicide">CrSi</a></li> <li><a href="/wiki/Chromium(IV)_oxide" title="Chromium(IV) oxide"><span class="chemf nowrap">CrO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium(IV)_fluoride" title="Chromium(IV) fluoride"><span class="chemf nowrap">CrF<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium(IV)_chloride" title="Chromium(IV) chloride"><span class="chemf nowrap">CrCl<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium(IV)_bromide" title="Chromium(IV) bromide"><span class="chemf nowrap">CrBr<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium(IV)_iodide" class="mw-redirect" title="Chromium(IV) iodide"><span class="chemf nowrap">CrI<sub class="template-chem2-sub">4</sub></span></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Chromium(V)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Potassium_tetraperoxochromate(V)" title="Potassium tetraperoxochromate(V)"> <span class="chemf nowrap">K<sub class="template-chem2-sub">3</sub>Cr(O<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromium_pentafluoride" title="Chromium pentafluoride"><span class="chemf nowrap">CrF<sub class="template-chem2-sub">5</sub></span></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hexavalent_chromium" title="Hexavalent chromium">Chromium(VI)</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink"><span class="chemf nowrap">CrO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Chromium(VI)_oxide_peroxide" title="Chromium(VI) oxide peroxide"><span class="chemf nowrap">CrO(O<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromic_acid" title="Chromic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>CrO<sub class="template-chem2-sub">4</sub></span>/<span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>Cr<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">7</sub></span></a></li> <li><a href="/wiki/Chromyl_fluoride" title="Chromyl fluoride"><span class="chemf nowrap">CrO<sub class="template-chem2-sub">2</sub>F<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chromium_oxytetrafluoride" title="Chromium oxytetrafluoride"><span class="chemf nowrap">CrOF<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Chromyl_chloride" title="Chromyl chloride"><span class="chemf nowrap">CrO<sub class="template-chem2-sub">2</sub>Cl<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/w/index.php?title=Chromyl_bromide&action=edit&redlink=1" class="new" title="Chromyl bromide (page does not exist)"><span class="chemf nowrap">CrO<sub class="template-chem2-sub">2</sub>Br<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Pyridinium_chlorochromate" title="Pyridinium chlorochromate"><span class="chemf nowrap">[C<sub class="template-chem2-sub">5</sub>H<sub class="template-chem2-sub">5</sub>NH]<sup class="template-chem2-sup">+</sup>CrO<sub class="template-chem2-sub">3</sub>Cl<sup class="template-chem2-sup">−</sup></span></a></li> <li><i><a href="/wiki/Chromium_hexafluoride" title="Chromium hexafluoride"><span class="chemf nowrap">CrF<sub class="template-chem2-sub">6</sub></span></a> (hypothetical)</i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Polyatomic_ion" title="Polyatomic ion">Polyatomic ion</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromate_and_dichromate" title="Chromate and dichromate">Chromate and dichromate</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235" /></div><div role="navigation" class="navbox" aria-labelledby="Oxides245" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Oxides" title="Template:Oxides"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Oxides" title="Template talk:Oxides"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Oxides" title="Special:EditPage/Template:Oxides"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Oxides245" style="font-size:114%;margin:0 4em"><a href="/wiki/Oxide" title="Oxide">Oxides</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Mixed oxidation states</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Antimony_tetroxide" title="Antimony tetroxide">Antimony tetroxide</a> (<a href="/wiki/Antimony" title="Antimony">Sb</a><sub>2</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Boron_suboxide" title="Boron suboxide">Boron suboxide</a> (<a href="/wiki/Boron" title="Boron">B</a><sub>12</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Carbon_suboxide" title="Carbon suboxide">Carbon suboxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a><sub>3</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Chlorine_perchlorate" title="Chlorine perchlorate">Chlorine perchlorate</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Chloryl_perchlorate" class="mw-redirect" title="Chloryl perchlorate">Chloryl perchlorate</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>6</sub>)</li> <li><a href="/wiki/Cobalt(II,III)_oxide" title="Cobalt(II,III) oxide">Cobalt(II,III) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Dichlorine_pentoxide" title="Dichlorine pentoxide">Dichlorine pentoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Iron(II,III)_oxide" title="Iron(II,III) oxide">Iron(II,III) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Lead(II,IV)_oxide" title="Lead(II,IV) oxide">Lead(II,IV) oxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Manganese(II,III)_oxide" title="Manganese(II,III) oxide">Manganese(II,III) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Mellitic_anhydride" title="Mellitic anhydride">Mellitic anhydride</a> (<a href="/wiki/Carbon" title="Carbon">C</a><sub>12</sub>O<sub>9</sub>)</li> <li><a href="/wiki/Praseodymium(III,IV)_oxide" title="Praseodymium(III,IV) oxide">Praseodymium(III,IV) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a><sub>6</sub>O<sub>11</sub>)</li> <li><a href="/wiki/Silver(I,III)_oxide" title="Silver(I,III) oxide">Silver(I,III) oxide</a> (<a href="/wiki/Silver" title="Silver">Ag</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Terbium(III,IV)_oxide" title="Terbium(III,IV) oxide">Terbium(III,IV) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a><sub>4</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Tribromine_octoxide" title="Tribromine octoxide">Tribromine octoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a><sub>3</sub>O<sub>8</sub>)</li> <li><a href="/wiki/Triuranium_octoxide" title="Triuranium octoxide">Triuranium octoxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a><sub>3</sub>O<sub>8</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+1 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium(I)_oxide" title="Aluminium(I) oxide">Aluminium(I) oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a><sub>2</sub>O)</li> <li><a href="/wiki/Copper(I)_oxide" title="Copper(I) oxide">Copper(I) oxide</a> (<a href="/wiki/Copper" title="Copper">Cu</a><sub>2</sub>O)</li> <li><a href="/wiki/Caesium_monoxide" title="Caesium monoxide">Caesium monoxide</a> (<a href="/wiki/Caesium" title="Caesium">Cs</a><sub>2</sub>O)</li> <li><a href="/wiki/Dibromine_monoxide" title="Dibromine monoxide">Dibromine monoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a><sub>2</sub>O)</li> <li><a href="/wiki/Dicarbon_monoxide" title="Dicarbon monoxide">Dicarbon monoxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a><sub>2</sub>O)</li> <li><a href="/wiki/Dichlorine_monoxide" title="Dichlorine monoxide">Dichlorine monoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O)</li> <li><a href="/wiki/Gallium(I)_oxide" title="Gallium(I) oxide">Gallium(I) oxide</a> (<a href="/wiki/Gallium" title="Gallium">Ga</a><sub>2</sub>O)</li> <li><a href="/wiki/Iodine(I)_oxide" class="mw-redirect" title="Iodine(I) oxide">Iodine(I) oxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a><sub>2</sub>O)</li> <li><a href="/wiki/Lithium_oxide" title="Lithium oxide">Lithium oxide</a> (<a href="/wiki/Lithium" title="Lithium">Li</a><sub>2</sub>O)</li> <li><a href="/wiki/Mercury(I)_oxide" title="Mercury(I) oxide">Mercury(I) oxide</a> (<a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a><sub>2</sub>O)</li> <li><a href="/wiki/Nitrous_oxide" title="Nitrous oxide">Nitrous oxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O)</li> <li><a href="/wiki/Potassium_oxide" title="Potassium oxide">Potassium oxide</a> (<a href="/wiki/Potassium" title="Potassium">K</a><sub>2</sub>O)</li> <li><a href="/wiki/Rubidium_oxide" title="Rubidium oxide">Rubidium oxide</a> (<a href="/wiki/Rubidium" title="Rubidium">Rb</a><sub>2</sub>O)</li> <li><a href="/wiki/Silver_oxide" title="Silver oxide">Silver oxide</a> (<a href="/wiki/Silver" title="Silver">Ag</a><sub>2</sub>O)</li> <li><a href="/wiki/Thallium(I)_oxide" title="Thallium(I) oxide">Thallium(I) oxide</a> (<a href="/wiki/Thallium" title="Thallium">Tl</a><sub>2</sub>O)</li> <li><a href="/wiki/Sodium_oxide" title="Sodium oxide">Sodium oxide</a> (<a href="/wiki/Sodium" title="Sodium">Na</a><sub>2</sub>O)</li> <li><a href="/wiki/Properties_of_water" title="Properties of water">Water (hydrogen oxide)</a> (<a href="/wiki/Hydrogen" title="Hydrogen">H</a><sub>2</sub>O)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+2 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium(II)_oxide" title="Aluminium(II) oxide">Aluminium(II) oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a>O)</li> <li><a href="/wiki/Barium_oxide" title="Barium oxide">Barium oxide</a> (<a href="/wiki/Barium" title="Barium">Ba</a>O)</li> <li><a href="/wiki/Berkelium_monoxide" class="mw-redirect" title="Berkelium monoxide">Berkelium monoxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a>O)</li> <li><a href="/wiki/Beryllium_oxide" title="Beryllium oxide">Beryllium oxide</a> (<a href="/wiki/Beryllium" title="Beryllium">Be</a>O)</li> <li><a href="/wiki/Boron_monoxide" title="Boron monoxide">Boron monoxide</a> (<a href="/wiki/Boron" title="Boron">B</a>O)</li> <li><a href="/wiki/Bromine_monoxide" class="mw-redirect" title="Bromine monoxide">Bromine monoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a>O)</li> <li><a href="/wiki/Cadmium_oxide" title="Cadmium oxide">Cadmium oxide</a> (<a href="/wiki/Cadmium" title="Cadmium">Cd</a>O)</li> <li><a href="/wiki/Calcium_oxide" title="Calcium oxide">Calcium oxide</a> (<a href="/wiki/Calcium" title="Calcium">Ca</a>O)</li> <li><a href="/wiki/Carbon_monoxide" title="Carbon monoxide">Carbon monoxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O)</li> <li><a href="/wiki/Chlorine_monoxide" title="Chlorine monoxide">Chlorine monoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a>O)</li> <li><a href="/wiki/Chromium(II)_oxide" title="Chromium(II) oxide">Chromium(II) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O)</li> <li><a href="/wiki/Cobalt(II)_oxide" title="Cobalt(II) oxide">Cobalt(II) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a>O)</li> <li><a href="/wiki/Copper(II)_oxide" title="Copper(II) oxide">Copper(II) oxide</a> (<a href="/wiki/Copper" title="Copper">Cu</a>O)</li> <li><a href="/wiki/Dinitrogen_dioxide" title="Dinitrogen dioxide">Dinitrogen dioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Disulfur_dioxide" title="Disulfur dioxide">Disulfur dioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Europium(II)_oxide" title="Europium(II) oxide">Europium(II) oxide</a> (<a href="/wiki/Europium" title="Europium">Eu</a>O)</li> <li><a href="/wiki/Germanium_monoxide" title="Germanium monoxide">Germanium monoxide</a> (<a href="/wiki/Germanium" title="Germanium">Ge</a>O)</li> <li><a href="/wiki/Iron(II)_oxide" title="Iron(II) oxide">Iron(II) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a>O)</li> <li><a href="/wiki/Iodine_monoxide" title="Iodine monoxide">Iodine monoxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a>O)</li> <li><a href="/wiki/Lead(II)_oxide" title="Lead(II) oxide">Lead(II) oxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a>O)</li> <li><a href="/wiki/Magnesium_oxide" title="Magnesium oxide">Magnesium oxide</a> (<a href="/wiki/Magnesium" title="Magnesium">Mg</a>O)</li> <li><a href="/wiki/Manganese(II)_oxide" title="Manganese(II) oxide">Manganese(II) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a>O)</li> <li><a href="/wiki/Mercury(II)_oxide" title="Mercury(II) oxide">Mercury(II) oxide</a> (<a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a>O)</li> <li><a href="/wiki/Nickel(II)_oxide" title="Nickel(II) oxide">Nickel(II) oxide</a> (<a href="/wiki/Nickel" title="Nickel">Ni</a>O)</li> <li><a href="/wiki/Nitric_oxide" title="Nitric oxide">Nitric oxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a>O)</li> <li><a href="/wiki/Niobium_monoxide" title="Niobium monoxide">Niobium monoxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a>O)</li> <li><a href="/wiki/Palladium(II)_oxide" title="Palladium(II) oxide">Palladium(II) oxide</a> (<a href="/wiki/Palladium" title="Palladium">Pd</a>O)</li> <li><a href="/wiki/Phosphorus_monoxide" title="Phosphorus monoxide">Phosphorus monoxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a>O)</li> <li><a href="/wiki/Polonium_monoxide" title="Polonium monoxide">Polonium monoxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O)</li> <li><a href="/wiki/Protactinium_monoxide" title="Protactinium monoxide">Protactinium monoxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a>O)</li> <li><a href="/wiki/Radium_oxide" title="Radium oxide">Radium oxide</a> (<a href="/wiki/Radium" title="Radium">Ra</a>O)</li> <li><a href="/wiki/Silicon_monoxide" title="Silicon monoxide">Silicon monoxide</a> (<a href="/wiki/Silicon" title="Silicon">Si</a>O)</li> <li><a href="/wiki/Strontium_oxide" title="Strontium oxide">Strontium oxide</a> (<a href="/wiki/Strontium" title="Strontium">Sr</a>O)</li> <li><a href="/wiki/Sulfur_monoxide" title="Sulfur monoxide">Sulfur monoxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O)</li> <li><a href="/wiki/Thorium_monoxide" title="Thorium monoxide">Thorium monoxide</a> (<a href="/wiki/Thorium" title="Thorium">Th</a>O)</li> <li><a href="/wiki/Tin(II)_oxide" title="Tin(II) oxide">Tin(II) oxide</a> (<a href="/wiki/Tin" title="Tin">Sn</a>O)</li> <li><a href="/wiki/Titanium(II)_oxide" title="Titanium(II) oxide">Titanium(II) oxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a>O)</li> <li><a href="/wiki/Vanadium(II)_oxide" title="Vanadium(II) oxide">Vanadium(II) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a>O)</li> <li><a href="/wiki/Yttrium(II)_oxide" title="Yttrium(II) oxide">Yttrium(II) oxide</a> (<a href="/wiki/Yttrium" title="Yttrium">Y</a>O)</li> <li><a href="/wiki/Zirconium_monoxide" class="mw-redirect" title="Zirconium monoxide">Zirconium monoxide</a> (<a href="/wiki/Zirconium" title="Zirconium">Zr</a>O)</li> <li><a href="/wiki/Zinc_oxide" title="Zinc oxide">Zinc oxide</a> (<a href="/wiki/Zinc" title="Zinc">Zn</a>O)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+3 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Actinium(III)_oxide" title="Actinium(III) oxide">Actinium(III) oxide</a> (<a href="/wiki/Actinium" title="Actinium">Ac</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Aluminium_oxide" title="Aluminium oxide">Aluminium oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Americium(III)_oxide" title="Americium(III) oxide">Americium(III) oxide</a> (<a href="/wiki/Americium" title="Americium">Am</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Antimony_trioxide" title="Antimony trioxide">Antimony trioxide</a> (<a href="/wiki/Antimony" title="Antimony">Sb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Arsenic_trioxide" title="Arsenic trioxide">Arsenic trioxide</a> (<a href="/wiki/Arsenic" title="Arsenic">As</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Berkelium(III)_oxide" title="Berkelium(III) oxide">Berkelium(III) oxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Bismuth(III)_oxide" title="Bismuth(III) oxide">Bismuth(III) oxide</a> (<a href="/wiki/Bismuth" title="Bismuth">Bi</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Boron_trioxide" title="Boron trioxide">Boron trioxide</a> (<a href="/wiki/Boron" title="Boron">B</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Caesium_sesquioxide" title="Caesium sesquioxide">Caesium sesquioxide</a> (<a href="/wiki/Caesium" title="Caesium">Cs</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Californium(III)_oxide" title="Californium(III) oxide">Californium(III) oxide</a> (<a href="/wiki/Californium" title="Californium">Cf</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Cerium(III)_oxide" title="Cerium(III) oxide">Cerium(III) oxide</a> (<a href="/wiki/Cerium" title="Cerium">Ce</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Chromium(III)_oxide" title="Chromium(III) oxide">Chromium(III) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Cobalt(III)_oxide" title="Cobalt(III) oxide">Cobalt(III) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Dinitrogen_trioxide" title="Dinitrogen trioxide">Dinitrogen trioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Dysprosium(III)_oxide" title="Dysprosium(III) oxide">Dysprosium(III) oxide</a> (<a href="/wiki/Dysprosium" title="Dysprosium">Dy</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Einsteinium(III)_oxide" title="Einsteinium(III) oxide">Einsteinium(III) oxide</a> (<a href="/wiki/Einsteinium" title="Einsteinium">Es</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Erbium(III)_oxide" title="Erbium(III) oxide">Erbium(III) oxide</a> (<a href="/wiki/Erbium" title="Erbium">Er</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Europium(III)_oxide" title="Europium(III) oxide">Europium(III) oxide</a> (<a href="/wiki/Europium" title="Europium">Eu</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gadolinium(III)_oxide" title="Gadolinium(III) oxide">Gadolinium(III) oxide</a> (<a href="/wiki/Gadolinium" title="Gadolinium">Gd</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gallium(III)_oxide" title="Gallium(III) oxide">Gallium(III) oxide</a> (<a href="/wiki/Gallium" title="Gallium">Ga</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gold(III)_oxide" title="Gold(III) oxide">Gold(III) oxide</a> (<a href="/wiki/Gold" title="Gold">Au</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Holmium(III)_oxide" title="Holmium(III) oxide">Holmium(III) oxide</a> (<a href="/wiki/Holmium" title="Holmium">Ho</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Indium(III)_oxide" title="Indium(III) oxide">Indium(III) oxide</a> (<a href="/wiki/Indium" title="Indium">In</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Iron(III)_oxide" title="Iron(III) oxide">Iron(III) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Lanthanum_oxide" title="Lanthanum oxide">Lanthanum oxide</a> (<a href="/wiki/Lanthanum" title="Lanthanum">La</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Lutetium(III)_oxide" title="Lutetium(III) oxide">Lutetium(III) oxide</a> (<a href="/wiki/Lutetium" title="Lutetium">Lu</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Manganese(III)_oxide" title="Manganese(III) oxide">Manganese(III) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Neodymium(III)_oxide" title="Neodymium(III) oxide">Neodymium(III) oxide</a> (<a href="/wiki/Neodymium" title="Neodymium">Nd</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Nickel(III)_oxide" title="Nickel(III) oxide">Nickel(III) oxide</a> (<a href="/wiki/Nickel" title="Nickel">Ni</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Phosphorus_trioxide" title="Phosphorus trioxide">Phosphorus trioxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a><sub>4</sub>O<sub>6</sub>)</li> <li><a href="/wiki/Praseodymium(III)_oxide" title="Praseodymium(III) oxide">Praseodymium(III) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Promethium(III)_oxide" title="Promethium(III) oxide">Promethium(III) oxide</a> (<a href="/wiki/Promethium" title="Promethium">Pm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Rhodium(III)_oxide" title="Rhodium(III) oxide">Rhodium(III) oxide</a> (<a href="/wiki/Rhodium" title="Rhodium">Rh</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Samarium(III)_oxide" title="Samarium(III) oxide">Samarium(III) oxide</a> (<a href="/wiki/Samarium" title="Samarium">Sm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Scandium_oxide" title="Scandium oxide">Scandium oxide</a> (<a href="/wiki/Scandium" title="Scandium">Sc</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Terbium(III)_oxide" title="Terbium(III) oxide">Terbium(III) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Thallium(III)_oxide" title="Thallium(III) oxide">Thallium(III) oxide</a> (<a href="/wiki/Thallium" title="Thallium">Tl</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Thulium(III)_oxide" title="Thulium(III) oxide">Thulium(III) oxide</a> (<a href="/wiki/Thulium" title="Thulium">Tm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Titanium(III)_oxide" title="Titanium(III) oxide">Titanium(III) oxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Tungsten(III)_oxide" title="Tungsten(III) oxide">Tungsten(III) oxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Vanadium(III)_oxide" title="Vanadium(III) oxide">Vanadium(III) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Ytterbium(III)_oxide" title="Ytterbium(III) oxide">Ytterbium(III) oxide</a> (<a href="/wiki/Ytterbium" title="Ytterbium">Yb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Yttrium(III)_oxide" title="Yttrium(III) oxide">Yttrium(III) oxide</a> (<a href="/wiki/Yttrium" title="Yttrium">Y</a><sub>2</sub>O<sub>3</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+4 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Americium_dioxide" title="Americium dioxide">Americium dioxide</a> (<a href="/wiki/Americium" title="Americium">Am</a>O<sub>2</sub>)</li> <li><a href="/wiki/Berkelium(IV)_oxide" title="Berkelium(IV) oxide">Berkelium(IV) oxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a>O<sub>2</sub>)</li> <li><a href="/wiki/Bromine_dioxide" title="Bromine dioxide">Bromine dioxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a>O<sub>2</sub>)</li> <li><a href="/wiki/Californium_dioxide" class="mw-redirect" title="Californium dioxide">Californium dioxide</a> (<a href="/wiki/Californium" title="Californium">Cf</a>O<sub>2</sub>)</li> <li><a href="/wiki/Carbon_dioxide" title="Carbon dioxide">Carbon dioxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O<sub>2</sub>)</li> <li><a href="/wiki/Carbon_trioxide" title="Carbon trioxide">Carbon trioxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O<sub>3</sub>)</li> <li><a href="/wiki/Cerium(IV)_oxide" title="Cerium(IV) oxide">Cerium(IV) oxide</a> (<a href="/wiki/Cerium" title="Cerium">Ce</a>O<sub>2</sub>)</li> <li><a href="/wiki/Chlorine_dioxide" title="Chlorine dioxide">Chlorine dioxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a>O<sub>2</sub>)</li> <li><a href="/wiki/Chromium(IV)_oxide" title="Chromium(IV) oxide">Chromium(IV) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O<sub>2</sub>)</li> <li><a href="/wiki/Curium(IV)_oxide" title="Curium(IV) oxide">Curium(IV) oxide</a> (<a href="/wiki/Curium" title="Curium">Cm</a>O<sub>2</sub>)</li> <li><a href="/wiki/Dinitrogen_tetroxide" title="Dinitrogen tetroxide">Dinitrogen tetroxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Germanium_dioxide" title="Germanium dioxide">Germanium dioxide</a> (<a href="/wiki/Germanium" title="Germanium">Ge</a>O<sub>2</sub>)</li> <li><a href="/wiki/Iodine_dioxide" title="Iodine dioxide">Iodine dioxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a>O<sub>2</sub>)</li> <li><a href="/wiki/Iridium_dioxide" class="mw-redirect" title="Iridium dioxide">Iridium dioxide</a> (<a href="/wiki/Iridium" title="Iridium">Ir</a>O<sub>2</sub>)</li> <li><a href="/wiki/Hafnium(IV)_oxide" title="Hafnium(IV) oxide">Hafnium(IV) oxide</a> (<a href="/wiki/Hafnium" title="Hafnium">Hf</a>O<sub>2</sub>)</li> <li><a href="/wiki/Lead_dioxide" title="Lead dioxide">Lead dioxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Manganese_dioxide" title="Manganese dioxide">Manganese dioxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a>O<sub>2</sub>)</li> <li><a href="/wiki/Molybdenum_dioxide" title="Molybdenum dioxide">Molybdenum dioxide</a> (<a href="/wiki/Molybdenum" title="Molybdenum">Mo</a>O<sub>2</sub>)</li> <li><a href="/wiki/Neptunium(IV)_oxide" title="Neptunium(IV) oxide">Neptunium(IV) oxide</a> (<a href="/wiki/Neptunium" title="Neptunium">Np</a>O<sub>2</sub>)</li> <li><a href="/wiki/Nitrogen_dioxide" title="Nitrogen dioxide">Nitrogen dioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a>O<sub>2</sub>)</li> <li><a href="/wiki/Niobium_dioxide" title="Niobium dioxide">Niobium dioxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Osmium_dioxide" title="Osmium dioxide">Osmium dioxide</a> (<a href="/wiki/Osmium" title="Osmium">Os</a>O<sub>2</sub>)</li> <li><a href="/wiki/Platinum_dioxide" class="mw-redirect" title="Platinum dioxide">Platinum dioxide</a> (<a href="/wiki/Platinum" title="Platinum">Pt</a>O<sub>2</sub>)</li> <li><a href="/wiki/Plutonium(IV)_oxide" title="Plutonium(IV) oxide">Plutonium(IV) oxide</a> (<a href="/wiki/Plutonium" title="Plutonium">Pu</a>O<sub>2</sub>)</li> <li><a href="/wiki/Polonium_dioxide" title="Polonium dioxide">Polonium dioxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O<sub>2</sub>)</li> <li><a href="/wiki/Praseodymium(IV)_oxide" title="Praseodymium(IV) oxide">Praseodymium(IV) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a>O<sub>2</sub>)</li> <li><a href="/wiki/Protactinium(IV)_oxide" title="Protactinium(IV) oxide">Protactinium(IV) oxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a>O<sub>2</sub>)</li> <li><a href="/wiki/Rhenium(IV)_oxide" title="Rhenium(IV) oxide">Rhenium(IV) oxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a>O<sub>2</sub>)</li> <li><a href="/wiki/Rhodium(IV)_oxide" title="Rhodium(IV) oxide">Rhodium(IV) oxide</a> (<a href="/wiki/Rhodium" title="Rhodium">Rh</a>O<sub>2</sub>)</li> <li><a href="/wiki/Ruthenium(IV)_oxide" title="Ruthenium(IV) oxide">Ruthenium(IV) oxide</a> (<a href="/wiki/Ruthenium" title="Ruthenium">Ru</a>O<sub>2</sub>)</li> <li><a href="/wiki/Selenium_dioxide" title="Selenium dioxide">Selenium dioxide</a> (<a href="/wiki/Selenium" title="Selenium">Se</a>O<sub>2</sub>)</li> <li><a href="/wiki/Silicon_dioxide" title="Silicon dioxide">Silicon dioxide</a> (<a href="/wiki/Silicon" title="Silicon">Si</a>O<sub>2</sub>)</li> <li><a href="/wiki/Sulfur_dioxide" title="Sulfur dioxide">Sulfur dioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O<sub>2</sub>)</li> <li><a href="/wiki/Technetium(IV)_oxide" title="Technetium(IV) oxide">Technetium(IV) oxide</a> (<a href="/wiki/Technetium" title="Technetium">Tc</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tellurium_dioxide" title="Tellurium dioxide">Tellurium dioxide</a> (<a href="/wiki/Tellurium" title="Tellurium">Te</a>O<sub>2</sub>)</li> <li><a href="/wiki/Terbium(IV)_oxide" title="Terbium(IV) oxide">Terbium(IV) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Thorium_dioxide" title="Thorium dioxide">Thorium dioxide</a> (<a href="/wiki/Thorium" title="Thorium">Th</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tin(IV)_oxide" title="Tin(IV) oxide">Tin dioxide</a> (<a href="/wiki/Tin" title="Tin">Sn</a>O<sub>2</sub>)</li> <li><a href="/wiki/Titanium_dioxide" title="Titanium dioxide">Titanium dioxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tungsten(IV)_oxide" title="Tungsten(IV) oxide">Tungsten(IV) oxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a>O<sub>2</sub>)</li> <li><a href="/wiki/Uranium_dioxide" title="Uranium dioxide">Uranium dioxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a>O<sub>2</sub>)</li> <li><a href="/wiki/Vanadium(IV)_oxide" title="Vanadium(IV) oxide">Vanadium(IV) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a>O<sub>2</sub>)</li> <li><a href="/wiki/Zirconium_dioxide" title="Zirconium dioxide">Zirconium dioxide</a> (<a href="/wiki/Zirconium" title="Zirconium">Zr</a>O<sub>2</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+5 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Antimony_pentoxide" title="Antimony pentoxide">Antimony pentoxide</a> (<a href="/wiki/Antimony" title="Antimony">Sb</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Arsenic_pentoxide" title="Arsenic pentoxide">Arsenic pentoxide</a> (<a href="/wiki/Arsenic" title="Arsenic">As</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Bismuth_pentoxide" title="Bismuth pentoxide">Bismuth pentoxide</a> (<a href="/wiki/Bismuth" title="Bismuth">Bi</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Dinitrogen_pentoxide" title="Dinitrogen pentoxide">Dinitrogen pentoxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Diuranium_pentoxide" title="Diuranium pentoxide">Diuranium pentoxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Niobium_pentoxide" title="Niobium pentoxide">Niobium pentoxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Phosphorus_pentoxide" title="Phosphorus pentoxide">Phosphorus pentoxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Protactinium(V)_oxide" title="Protactinium(V) oxide">Protactinium(V) oxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Tantalum_pentoxide" title="Tantalum pentoxide">Tantalum pentoxide</a> (<a href="/wiki/Tantalum" title="Tantalum">Ta</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Tungsten_pentoxide" title="Tungsten pentoxide">Tungsten pentoxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Vanadium(V)_oxide" title="Vanadium(V) oxide">Vanadium(V) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a><sub>2</sub>O<sub>5</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+6 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Chromium trioxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O<sub>3</sub>)</li> <li><a href="/wiki/Molybdenum_trioxide" title="Molybdenum trioxide">Molybdenum trioxide</a> (<a href="/wiki/Molybdenum" title="Molybdenum">Mo</a>O<sub>3</sub>)</li> <li><a href="/wiki/Polonium_trioxide" title="Polonium trioxide">Polonium trioxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O<sub>3</sub>)</li> <li><a href="/wiki/Rhenium_trioxide" title="Rhenium trioxide">Rhenium trioxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a>O<sub>3</sub>)</li> <li><a href="/wiki/Selenium_trioxide" title="Selenium trioxide">Selenium trioxide</a> (<a href="/wiki/Selenium" title="Selenium">Se</a>O<sub>3</sub>)</li> <li><a href="/wiki/Sulfur_trioxide" title="Sulfur trioxide">Sulfur trioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O<sub>3</sub>)</li> <li><a href="/wiki/Tellurium_trioxide" title="Tellurium trioxide">Tellurium trioxide</a> (<a href="/wiki/Tellurium" title="Tellurium">Te</a>O<sub>3</sub>)</li> <li><a href="/wiki/Tungsten_trioxide" title="Tungsten trioxide">Tungsten trioxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a>O<sub>3</sub>)</li> <li><a href="/wiki/Uranium_trioxide" title="Uranium trioxide">Uranium trioxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a>O<sub>3</sub>)</li> <li><a href="/wiki/Xenon_trioxide" title="Xenon trioxide">Xenon trioxide</a> (<a href="/wiki/Xenon" title="Xenon">Xe</a>O<sub>3</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+7 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dichlorine_heptoxide" title="Dichlorine heptoxide">Dichlorine heptoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Manganese_heptoxide" title="Manganese heptoxide">Manganese heptoxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Rhenium(VII)_oxide" title="Rhenium(VII) oxide">Rhenium(VII) oxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Technetium(VII)_oxide" title="Technetium(VII) oxide">Technetium(VII) oxide</a> (<a href="/wiki/Technetium" title="Technetium">Tc</a><sub>2</sub>O<sub>7</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+8 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Iridium_tetroxide" title="Iridium tetroxide">Iridium tetroxide</a> (<a href="/wiki/Iridium" title="Iridium">Ir</a>O<sub>4</sub>)</li> <li><a href="/wiki/Osmium_tetroxide" title="Osmium tetroxide">Osmium tetroxide</a> (<a href="/wiki/Osmium" title="Osmium">Os</a>O<sub>4</sub>)</li> <li><a href="/wiki/Ruthenium_tetroxide" title="Ruthenium tetroxide">Ruthenium tetroxide</a> (<a href="/wiki/Ruthenium" title="Ruthenium">Ru</a>O<sub>4</sub>)</li> <li><a href="/wiki/Xenon_tetroxide" title="Xenon tetroxide">Xenon tetroxide</a> (<a href="/wiki/Xenon" title="Xenon">Xe</a>O<sub>4</sub>)</li> <li><a href="/wiki/Hassium_tetroxide" title="Hassium tetroxide">Hassium tetroxide</a> (<a href="/wiki/Hassium" title="Hassium">Hs</a>O<sub>4</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Oxocarbon" title="Oxocarbon">Oxocarbon</a></li> <li><a href="/wiki/Suboxide" title="Suboxide">Suboxide</a></li> <li><a href="/wiki/Oxyanion" title="Oxyanion">Oxyanion</a></li> <li><a href="/wiki/Ozonide" title="Ozonide">Ozonide</a></li> <li><a href="/wiki/Peroxide" title="Peroxide">Peroxide</a></li> <li><a href="/wiki/Superoxide" title="Superoxide">Superoxide</a></li> <li><a href="/wiki/Oxypnictide" title="Oxypnictide">Oxypnictide</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>Oxides are sorted by <a href="/wiki/Oxidation_state" title="Oxidation state">oxidation state</a>. <a href="/wiki/Category:Oxides" title="Category:Oxides">Category:Oxides</a></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /></div><div role="navigation" class="navbox" aria-labelledby="Oxygen_compounds20" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Oxygen_compounds" title="Template:Oxygen compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Oxygen_compounds" title="Template talk:Oxygen compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Oxygen_compounds" title="Special:EditPage/Template:Oxygen compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Oxygen_compounds20" style="font-size:114%;margin:0 4em"><a href="/wiki/Oxygen_compounds" title="Oxygen compounds">Oxygen compounds</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Silver(I,III)_oxide" title="Silver(I,III) oxide">Ag<sub>4</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Aluminium_oxide" title="Aluminium oxide">Al<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Americium_dioxide" title="Americium dioxide">AmO<sub>2</sub></a></li> <li><a href="/wiki/Americium(III)_oxide" title="Americium(III) oxide">Am<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Arsenic_trioxide" title="Arsenic trioxide">As<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Arsenic_pentoxide" title="Arsenic pentoxide">As<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/wiki/Gold(III)_oxide" title="Gold(III) oxide">Au<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Boron_trioxide" title="Boron trioxide">B<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Barium_oxide" title="Barium oxide">BaO</a></li> <li><a href="/wiki/Beryllium_oxide" title="Beryllium oxide">BeO</a></li> <li><a href="/wiki/Bismuth(III)_oxide" title="Bismuth(III) oxide">Bi<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/w/index.php?title=Bismuth_tetroxide&action=edit&redlink=1" class="new" title="Bismuth tetroxide (page does not exist)">BiO<sub>2</sub></a></li> <li><a href="/wiki/Bismuth_pentoxide" title="Bismuth pentoxide">Bi<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/wiki/Bromine_dioxide" title="Bromine dioxide">BrO<sub>2</sub></a></li> <li><a href="/wiki/Dibromine_trioxide" title="Dibromine trioxide">Br<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Dibromine_pentoxide" title="Dibromine pentoxide">Br<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/wiki/Tribromine_octoxide" title="Tribromine octoxide"><span class="chemf nowrap">Br<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">3</sub></span></span>O<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">8</sub></span></span></span></a></li> <li><a href="/wiki/Carbon_monoxide" title="Carbon monoxide">CO</a></li> <li><a href="/wiki/Carbon_dioxide" title="Carbon dioxide">CO<sub>2</sub></a></li> <li><a href="/wiki/Carbon_suboxide" title="Carbon suboxide">C<sub>3</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Calcium_oxide" title="Calcium oxide">CaO</a></li> <li><a href="/wiki/Calcium_peroxide" title="Calcium peroxide">CaO<sub>2</sub></a></li> <li><a href="/wiki/Cadmium_oxide" title="Cadmium oxide">CdO</a></li> <li><a href="/wiki/Cerium(IV)_oxide" title="Cerium(IV) oxide">CeO<sub>2</sub></a></li> <li><a href="/w/index.php?title=Cerium(III,IV)_oxide&action=edit&redlink=1" class="new" title="Cerium(III,IV) oxide (page does not exist)">Ce<sub>3</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Cerium(III)_oxide" title="Cerium(III) oxide">Ce<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Chlorine_dioxide" title="Chlorine dioxide">ClO<sub>2</sub></a></li> <li><a href="/wiki/Dichlorine_monoxide" title="Dichlorine monoxide">Cl<sub>2</sub>O</a></li> <li><a href="/wiki/Chlorine_peroxide" title="Chlorine peroxide">Cl<sub>2</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Dichlorine_trioxide" title="Dichlorine trioxide">Cl<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Chlorine_perchlorate" title="Chlorine perchlorate">Cl<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Dichlorine_hexoxide" title="Dichlorine hexoxide">Cl<sub>2</sub>O<sub>6</sub></a></li> <li><a href="/wiki/Dichlorine_heptoxide" title="Dichlorine heptoxide">Cl<sub>2</sub>O<sub>7</sub></a></li> <li><a href="/wiki/Cobalt(II)_oxide" title="Cobalt(II) oxide">CoO</a></li> <li><a href="/wiki/Cobalt(III)_oxide" title="Cobalt(III) oxide">Co<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Cobalt(II,III)_oxide" title="Cobalt(II,III) oxide">Co<sub>3</sub>O<sub>4</sub></a></li> <li><a class="mw-selflink selflink">CrO<sub>3</sub></a></li> <li><a href="/wiki/Chromium(III)_oxide" title="Chromium(III) oxide">Cr<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Chromium(IV)_oxide" title="Chromium(IV) oxide">Cr<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/w/index.php?title=Chromic_chromate&action=edit&redlink=1" class="new" title="Chromic chromate (page does not exist)">Cr<sub>5</sub>O<sub>12</sub></a></li> <li><a href="/wiki/Cesium_superoxide" class="mw-redirect" title="Cesium superoxide">CsO<sub>2</sub></a></li> <li><a href="/wiki/Caesium_sesquioxide" title="Caesium sesquioxide">Cs<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Copper(II)_oxide" title="Copper(II) oxide">CuO</a></li> <li><a href="/wiki/Dysprosium(III)_oxide" title="Dysprosium(III) oxide">Dy<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Erbium(III)_oxide" title="Erbium(III) oxide">Er<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Europium(III)_oxide" title="Europium(III) oxide">Eu<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Iron(II)_oxide" title="Iron(II) oxide">FeO</a></li> <li><a href="/wiki/Iron(III)_oxide" title="Iron(III) oxide">Fe<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Iron(II,III)_oxide" title="Iron(II,III) oxide">Fe<sub>3</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Gallium(I)_oxide" title="Gallium(I) oxide">Ga<sub>2</sub>O</a></li> <li><a href="/wiki/Gallium(III)_oxide" title="Gallium(III) oxide">Ga<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Germanium_monoxide" title="Germanium monoxide">GeO</a></li> <li><a href="/wiki/Germanium_dioxide" title="Germanium dioxide">GeO<sub>2</sub></a></li> <li><a href="/wiki/Properties_of_water" title="Properties of water">H<sub>2</sub>O</a></li> <li><a href="/wiki/Heavy_water" title="Heavy water"><sup>2</sup>H<sub>2</sub>O</a></li> <li><a href="/wiki/Tritiated_water" title="Tritiated water"><sup>3</sup>H<sub>2</sub>O</a></li> <li><a href="/wiki/Heavy_water" title="Heavy water">H<sub>2</sub><sup>18</sup>O</a></li> <li><a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">H<sub>2</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Hafnium(IV)_oxide" title="Hafnium(IV) oxide">HfO<sub>2</sub></a></li> <li><a href="/wiki/Mercury(II)_oxide" title="Mercury(II) oxide">HgO</a></li> <li><a href="/wiki/Mercury(I)_oxide" title="Mercury(I) oxide">Hg<sub>2</sub>O</a></li> <li><a href="/wiki/Holmium(III)_oxide" title="Holmium(III) oxide">Ho<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Iodine_monoxide" title="Iodine monoxide">IO</a></li> <li><a href="/wiki/Iodine_tetroxide" class="mw-redirect" title="Iodine tetroxide">I<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Iodine_pentoxide" title="Iodine pentoxide">I<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/w/index.php?title=Iodine_hexoxide&action=edit&redlink=1" class="new" title="Iodine hexoxide (page does not exist)">I<sub>2</sub>O<sub>6</sub></a></li> <li><a href="/wiki/Tetraiodine_nonoxide" title="Tetraiodine nonoxide">I<sub>4</sub>O<sub>9</sub></a></li> <li><a href="/wiki/Indium(III)_oxide" title="Indium(III) oxide">In<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Iridium(IV)_oxide" title="Iridium(IV) oxide">IrO<sub>2</sub></a></li> <li><a href="/wiki/Potassium_superoxide" title="Potassium superoxide">KO<sub>2</sub></a></li> <li><a href="/wiki/Potassium_peroxide" title="Potassium peroxide">K<sub>2</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Lanthanum_oxide" title="Lanthanum oxide">La<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Lithium_oxide" title="Lithium oxide">Li<sub>2</sub>O</a></li> <li><a href="/wiki/Lithium_peroxide" title="Lithium peroxide">Li<sub>2</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Lutetium(III)_oxide" title="Lutetium(III) oxide">Lu<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Magnesium_oxide" title="Magnesium oxide">MgO</a></li> <li><a href="/wiki/Magnesium_peroxide" title="Magnesium peroxide">Mg<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Manganese(II)_oxide" title="Manganese(II) oxide">MnO</a></li> <li><a href="/wiki/Manganese_dioxide" title="Manganese dioxide">MnO<sub>2</sub></a></li> <li><a href="/wiki/Manganese(III)_oxide" title="Manganese(III) oxide">Mn<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Manganese_heptoxide" title="Manganese heptoxide">Mn<sub>2</sub>O<sub>7</sub></a></li> <li><a href="/wiki/Molybdenum_dioxide" title="Molybdenum dioxide">MoO<sub>2</sub></a></li> <li><a href="/wiki/Molybdenum_trioxide" title="Molybdenum trioxide">MoO<sub>3</sub></a></li> <li><a href="/w/index.php?title=Molybdenum(III)_oxide&action=edit&redlink=1" class="new" title="Molybdenum(III) oxide (page does not exist)">Mo<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Nitric_oxide" title="Nitric oxide">NO</a></li> <li><a href="/wiki/Nitrogen_dioxide" title="Nitrogen dioxide">NO<sub>2</sub></a></li> <li><a href="/wiki/Nitrous_oxide" title="Nitrous oxide">N<sub>2</sub>O</a></li> <li><a href="/wiki/Nitrogen_trioxide" class="mw-redirect" title="Nitrogen trioxide">N<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Dinitrogen_tetroxide" title="Dinitrogen tetroxide">N<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Dinitrogen_pentoxide" title="Dinitrogen pentoxide">N<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/wiki/Sodium_superoxide" title="Sodium superoxide">NaO<sub>2</sub></a></li> <li><a href="/wiki/Sodium_oxide" title="Sodium oxide">Na<sub>2</sub>O</a></li> <li><a href="/wiki/Sodium_peroxide" title="Sodium peroxide">Na<sub>2</sub>O<sub>2</sub></a></li> <li><a href="/wiki/Niobium_monoxide" title="Niobium monoxide">NbO</a></li> <li><a href="/wiki/Niobium_dioxide" title="Niobium dioxide">NbO<sub>2</sub></a></li> <li><span class="chemf nowrap"><a href="/wiki/Neodymium(III)_oxide" title="Neodymium(III) oxide">Nd<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Dioxygen_monofluoride" title="Dioxygen monofluoride">O<sub class="template-chem2-sub">2</sub>F</a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Oxygen_monofluoride" title="Oxygen monofluoride">OF</a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Oxygen_difluoride" title="Oxygen difluoride">OF<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Dioxygen_difluoride" title="Dioxygen difluoride">O<sub class="template-chem2-sub">2</sub>F<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Trioxygen_difluoride" class="mw-redirect" title="Trioxygen difluoride">O<sub class="template-chem2-sub">3</sub>F<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Tetraoxygen_difluoride" title="Tetraoxygen difluoride">O<sub class="template-chem2-sub">4</sub>F<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Pentaoxygen_difluoride" title="Pentaoxygen difluoride">O<sub class="template-chem2-sub">5</sub>F<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Hexaoxygen_difluoride" title="Hexaoxygen difluoride">O<sub class="template-chem2-sub">6</sub>F<sub class="template-chem2-sub">2</sub></a></span></li> <li><span class="chemf nowrap"><a href="/wiki/Dioxygenyl_hexafluoroplatinate" title="Dioxygenyl hexafluoroplatinate">O<sub class="template-chem2-sub">2</sub>PtF<sub class="template-chem2-sub">6</sub></a></span></li> <li><a href="/wiki/Template:Oxides" title="Template:Oxides">more...</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Chromium_trioxide&oldid=1273943174">https://en.wikipedia.org/w/index.php?title=Chromium_trioxide&oldid=1273943174</a>"</div></div> <div id="catlinks" class="catlinks" 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