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Available in 28 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-28" 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">28 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/Bariumperoksied" title="Bariumperoksied – Afrikaans" lang="af" hreflang="af" data-title="Bariumperoksied" 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%A8%D9%8A%D8%B1%D9%88%D9%83%D8%B3%D9%8A%D8%AF_%D8%A7%D9%84%D8%A8%D8%A7%D8%B1%D9%8A%D9%88%D9%85" title="بيروكسيد الباريوم – Arabic" lang="ar" hreflang="ar" data-title="بيروكسيد الباريوم" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A8%D8%A7%D8%B1%DB%8C%D9%88%D9%85_%D9%BE%D8%B1%D8%A7%D9%88%DA%A9%D8%B3%DB%8C%D8%AF" title="باریوم پراوکسید – South Azerbaijani" lang="azb" hreflang="azb" data-title="باریوم پراوکسید" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Per%C3%B2xid_de_bari" title="Peròxid de bari – Catalan" lang="ca" hreflang="ca" data-title="Peròxid de bari" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Peroxid_barnat%C3%BD" title="Peroxid barnatý – Czech" lang="cs" hreflang="cs" data-title="Peroxid barnatý" 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/Bariumperoxid" title="Bariumperoxid – German" lang="de" hreflang="de" data-title="Bariumperoxid" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Per%C3%B3xido_de_bario" title="Peróxido de bario – Spanish" lang="es" hreflang="es" data-title="Peróxido de bario" 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/%D8%A8%D8%A7%D8%B1%DB%8C%D9%85_%D9%BE%D8%B1%D8%A7%DA%A9%D8%B3%DB%8C%D8%AF" title="باریم پراکسید – Persian" lang="fa" hreflang="fa" data-title="باریم پراکسید" 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/Peroxyde_de_baryum" title="Peroxyde de baryum – French" lang="fr" hreflang="fr" data-title="Peroxyde de baryum" 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/%EA%B3%BC%EC%82%B0%ED%99%94_%EB%B0%94%EB%A5%A8" title="과산화 바륨 – Korean" lang="ko" hreflang="ko" data-title="과산화 바륨" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Perossido_di_bario" title="Perossido di bario – Italian" lang="it" hreflang="it" data-title="Perossido di bario" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/B%C3%A1rium-peroxid" title="Bárium-peroxid – Hungarian" lang="hu" hreflang="hu" data-title="Bárium-peroxid" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Bariumperoxide" title="Bariumperoxide – Dutch" lang="nl" hreflang="nl" data-title="Bariumperoxide" 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%81%8E%E9%85%B8%E5%8C%96%E3%83%90%E3%83%AA%E3%82%A6%E3%83%A0" title="過酸化バリウム – Japanese" lang="ja" hreflang="ja" data-title="過酸化バリウム" 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/Nadtlenek_baru" title="Nadtlenek baru – Polish" lang="pl" hreflang="pl" data-title="Nadtlenek baru" 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/Per%C3%B3xido_de_b%C3%A1rio" title="Peróxido de bário – Portuguese" lang="pt" hreflang="pt" data-title="Peróxido de bário" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4_%D0%B1%D0%B0%D1%80%D0%B8%D1%8F" title="Пероксид бария – Russian" lang="ru" hreflang="ru" data-title="Пероксид бария" 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/Barium_peroxide" title="Barium peroxide – Simple English" lang="en-simple" hreflang="en-simple" data-title="Barium peroxide" 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-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Peroxid_b%C3%A1rnat%C3%BD" title="Peroxid bárnatý – Slovak" lang="sk" hreflang="sk" data-title="Peroxid bárnatý" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Barijum_peroksid" title="Barijum peroksid – Serbian" lang="sr" hreflang="sr" data-title="Barijum peroksid" 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/Barijum_peroksid" title="Barijum peroksid – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Barijum peroksid" 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/Bariumperoksidi" title="Bariumperoksidi – Finnish" lang="fi" hreflang="fi" data-title="Bariumperoksidi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AF%87%E0%AE%B0%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D_%E0%AE%AA%E0%AF%86%E0%AE%B0%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%9A%E0%AF%88%E0%AE%9F%E0%AF%81" title="பேரியம் பெராக்சைடு – Tamil" lang="ta" hreflang="ta" data-title="பேரியம் பெராக்சைடு" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AC%E0%B1%87%E0%B0%B0%E0%B0%BF%E0%B0%AF%E0%B0%82_%E0%B0%AA%E0%B1%86%E0%B0%B0%E0%B0%BE%E0%B0%95%E0%B1%8D%E0%B0%B8%E0%B1%88%E0%B0%A1%E0%B1%8D" title="బేరియం పెరాక్సైడ్ – Telugu" lang="te" hreflang="te" data-title="బేరియం పెరాక్సైడ్" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%81%E0%B8%9A%E0%B9%80%E0%B8%A3%E0%B8%B5%E0%B8%A2%E0%B8%A1%E0%B9%80%E0%B8%9E%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%AD%E0%B8%AD%E0%B8%81%E0%B9%84%E0%B8%8B%E0%B8%94%E0%B9%8C" title="แบเรียมเพอร์ออกไซด์ – Thai" lang="th" hreflang="th" data-title="แบเรียมเพอร์ออกไซด์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Bari_peroxide" title="Bari peroxide – Vietnamese" lang="vi" hreflang="vi" data-title="Bari peroxide" 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-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%BF%87%E6%B0%A7%E5%8C%96%E9%92%A1" title="过氧化钡 – Wu" lang="wuu" hreflang="wuu" data-title="过氧化钡" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%BF%87%E6%B0%A7%E5%8C%96%E9%92%A1" title="过氧化钡 – Chinese" lang="zh" hreflang="zh" data-title="过氧化钡" 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 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dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1084375498">.mw-parser-output .ib-chembox{border-collapse:collapse;text-align:left}.mw-parser-output .ib-chembox td,.mw-parser-output .ib-chembox th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}</style> <table class="infobox ib-chembox"> <caption>Barium peroxide </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:Peroxid_barnat%C3%BD.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Peroxid_barnat%C3%BD.JPG/220px-Peroxid_barnat%C3%BD.JPG" decoding="async" width="220" height="168" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Peroxid_barnat%C3%BD.JPG/330px-Peroxid_barnat%C3%BD.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/82/Peroxid_barnat%C3%BD.JPG/440px-Peroxid_barnat%C3%BD.JPG 2x" data-file-width="627" data-file-height="480" /></a></span> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:BaO2structure.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/BaO2structure.jpg/220px-BaO2structure.jpg" decoding="async" width="220" height="133" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/BaO2structure.jpg/330px-BaO2structure.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0d/BaO2structure.jpg/440px-BaO2structure.jpg 2x" data-file-width="600" data-file-height="362" /></a></span><br /><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:lime; color:black;"> </span> Barium cations <style data-mw-deduplicate="TemplateStyles:r1123817410">.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output sub.template-chem2-sub{font-size:80%;vertical-align:-0.35em}.mw-parser-output sup.template-chem2-sup{font-size:80%;vertical-align:0.65em}</style><span class="chemf nowrap">Ba<sup>2+</sup></span></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;"> </span> Peroxide anions <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">O<span class="template-chem2-su"><span>2−</span><span>2</span></span></span></div></div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; 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;">barium peroxide</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;">Barium binoxide,<br />Barium dioxide</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; 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=1304-29-6">1304-29-6</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=%5BBa%2B2%5D.%5BO-%5D%5BO-%5D">Interactive image</a></span></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.14090.html">14090</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/100.013.754">100.013.754</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q411394#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><a href="/wiki/European_Community_number" title="European Community number"><span title="European Community number (chemical identifier)">EC Number</span></a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li>215-128-4</li></ul></div> </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/14773">14773</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>CR0175000</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/T892KY013Y">T892KY013Y</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>1449 </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/DTXSID9051294">DTXSID9051294</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q411394#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; background:transparent;"><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/Ba.O2/c;1-2/q+2;-2<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: ZJRXSAYFZMGQFP-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/Ba.O2/c;1-2/q+2;-2</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: ZJRXSAYFZMGQFP-UHFFFAOYAZ</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; background:transparent;"><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%;">[Ba+2].[O-][O-]</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; 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><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">BaO<sub class="template-chem2-sub">2</sub></span>  </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td>169.33 g/mol (anhydrous)<br />313.45 g/mol (octahydrate)    </td></tr> <tr> <td>Appearance </td> <td>Grey-white crystalline solid (anhydrous)<br />Colorless solid (octahydrate) </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>5.68 g/cm<sup>3</sup> (anhydrous)<br />2.292 g/cm<sup>3</sup> (octahydrate) </td></tr> <tr> <td><a href="/wiki/Melting_point" title="Melting point">Melting point</a> </td> <td>450 °C (842 °F; 723 K) </td></tr> <tr> <td><a href="/wiki/Boiling_point" title="Boiling point">Boiling point</a> </td> <td>800 °C (1,470 °F; 1,070 K) (decomposes to <a href="/wiki/Barium_oxide" title="Barium oxide">BaO</a> & <a href="/wiki/Oxygen" title="Oxygen"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">O<sub class="template-chem2-sub">2</sub></span></a>.<sup id="cite_ref-Ceramic_1-0" class="reference"><a href="#cite_note-Ceramic-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>0.091 g/(100 mL) (20 °C) (anhydrous)<br />0.168 g/cm<sup>3</sup> (octahydrate) </td></tr> <tr> <td><a href="/wiki/Solubility" title="Solubility">Solubility</a> </td> <td>dissolves with decomposition in acid </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>−40.6·10<sup>−6</sup> cm<sup>3</sup>/mol </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Structure </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Crystal_structure" title="Crystal structure">Crystal structure</a></div> </td> <td><a href="/wiki/Tetragonal_crystal_structure" class="mw-redirect" title="Tetragonal crystal structure">Tetragonal</a><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<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/Space_group" title="Space group">Space group</a></div> </td> <td>D<sup>17</sup><sub>4h</sub>, I4/mmm, <a href="/wiki/Pearson_symbol" title="Pearson symbol">tI6</a> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Coordination_geometry" title="Coordination geometry">Coordination geometry</a></div> </td> <td>6 </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Hazards </th></tr> <tr> <td colspan="2" style="text-align:left; background-color:#eaeaea;"><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-exclam.svg" class="mw-file-description" title="GHS07: Exclamation mark"><img alt="GHS07: Exclamation mark" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/GHS-pictogram-exclam.svg/50px-GHS-pictogram-exclam.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/GHS-pictogram-exclam.svg/75px-GHS-pictogram-exclam.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/GHS-pictogram-exclam.svg/100px-GHS-pictogram-exclam.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span> </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>Warning</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="H272: May intensify fire: oxidizer">H272</abbr>, <abbr class="abbr" title="H302: Harmful if swallowed">H302</abbr>, <abbr class="abbr" title="H332: Harmful if inhaled">H332</abbr> </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="P220: Keep/Store away from clothing/.../combustible materials.">P220</abbr>, <abbr class="abbr" title="P221: Take any precaution to avoid mixing with combustibles.">P221</abbr>, <abbr class="abbr" title="P261: Avoid breathing dust/fume/gas/mist/vapours/spray.">P261</abbr>, <abbr class="abbr" title="P264: Wash ... thoroughly after handling.">P264</abbr>, <abbr class="abbr" title="P270: Do not eat, drink or smoke when using this product.">P270</abbr>, <abbr class="abbr" title="P271: Use only outdoors or in a well-ventilated area.">P271</abbr>, <abbr class="abbr" title="P280: Wear protective gloves/protective clothing/eye protection/face protection.">P280</abbr>, <abbr class="abbr" title="P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.">P301+P312</abbr>, <abbr class="abbr" title="P304+P312: IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.">P304+P312</abbr>, <abbr class="abbr" title="P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.">P304+P340</abbr>, <abbr class="abbr" title="P312: Call a POISON CENTER or doctor/physician if you feel unwell.">P312</abbr>, <abbr class="abbr" title="P330: Rinse mouth.">P330</abbr>, <abbr class="abbr" title="P370+P378: In case of fire: Use ... to extinguish.">P370+P378</abbr>, <abbr class="abbr" title="P501: Dispose of contents/container to ...">P501</abbr> </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-704-diamond-container"><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_837f8871c7b8cc3f" /></span><map name="ImageMap_837f8871c7b8cc3f"><area href="/wiki/NFPA_704#Blue" shape="poly" coords="23,23,47,47,23,70,0,47" alt="Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas" title="Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine 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 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas" class="notheme mw-no-invert">3</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:#f8eaba; 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=443750435&page2=Barium+peroxide">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>Barium peroxide</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"><a href="/wiki/Barium" title="Barium">Ba</a><a href="/wiki/Oxygen" title="Oxygen">O</a><sub class="template-chem2-sub">2</sub></span>. This white solid (gray when impure) is one of the most common inorganic <a href="/wiki/Peroxide" title="Peroxide">peroxides</a>, and it was the first peroxide compound discovered. Being an <a href="/wiki/Oxidizer" class="mw-redirect" title="Oxidizer">oxidizer</a> and giving a vivid green colour upon ignition (as do all barium compounds), it finds some use in <a href="/wiki/Fireworks" title="Fireworks">fireworks</a>; historically, it was also used as a precursor for <a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">hydrogen peroxide</a>.<sup id="cite_ref-Ullmann_3-0" class="reference"><a href="#cite_note-Ullmann-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Barium_peroxide&action=edit&section=1" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Barium peroxide consists of barium <a href="/wiki/Cations" class="mw-redirect" title="Cations">cations</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">Ba<sup>2+</sup></span> and peroxide <a href="/wiki/Anions" class="mw-redirect" title="Anions">anions</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">O<span class="template-chem2-su"><span>2−</span><span>2</span></span></span>. The solid is <a href="/wiki/Isomorphism_(crystallography)" title="Isomorphism (crystallography)">isomorphous</a> to <a href="/wiki/Calcium_carbide" title="Calcium carbide">calcium carbide</a>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">CaC<sub class="template-chem2-sub">2</sub></span>. </p> <div class="mw-heading mw-heading2"><h2 id="Preparation_and_use">Preparation and use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Barium_peroxide&action=edit&section=2" title="Edit section: Preparation and use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Barium peroxide arises by the reversible reaction of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">O<sub class="template-chem2-sub">2</sub></span> with <a href="/wiki/Barium_oxide" title="Barium oxide">barium oxide</a>. The peroxide forms around 500 °C and oxygen is released above 820 °C.<sup id="cite_ref-Ceramic_1-1" class="reference"><a href="#cite_note-Ceramic-1"><span class="cite-bracket">[</span>1<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">2 BaO + O<sub class="template-chem2-sub">2</sub> ⇌ 2 BaO<sub class="template-chem2-sub">2</sub></span></dd></dl> <p>This reaction is the basis for the now-obsolete <a href="/wiki/Brin_process" title="Brin process">Brin process</a> for separating oxygen from the atmosphere. Other oxides, e.g. <a href="/wiki/Sodium_oxide" title="Sodium oxide"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">Na<sub class="template-chem2-sub">2</sub>O</span></a> and <a href="/wiki/Strontium_oxide" title="Strontium oxide">SrO</a>, behave similarly.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>In another obsolete application, barium peroxide was once used to produce <a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">hydrogen peroxide</a> via its reaction with <a href="/wiki/Sulfuric_acid" title="Sulfuric acid">sulfuric acid</a>:<sup id="cite_ref-Ullmann_3-1" class="reference"><a href="#cite_note-Ullmann-3"><span class="cite-bracket">[</span>3<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">BaO<sub class="template-chem2-sub">2</sub> + H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">4</sub> → H<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">2</sub> + BaSO<sub class="template-chem2-sub">4</sub></span></dd></dl> <p>The insoluble <a href="/wiki/Barium_sulfate" title="Barium sulfate">barium sulfate</a> is filtered from the mixture. </p> <div class="mw-heading mw-heading2"><h2 id="Footnotes">Footnotes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Barium_peroxide&action=edit&section=3" title="Edit section: Footnotes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Ceramic-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Ceramic_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Ceramic_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Accommodation of Excess Oxygen in Group II Monoxides - S.C. Middleburgh, R.W. Grimes and K.P.D. Lagerlof Journal of the American Ceramic Society 2013, Volume 96, pages 308–311. <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><a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1551-2916.2012.05452.x">10.1111/j.1551-2916.2012.05452.x</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMassalimovKireevaSangalov2002" class="citation journal cs1">Massalimov, I. A.; Kireeva, M. S.; Sangalov, Yu. A. (2002). "Structure and Properties of Mechanically Activated Barium Peroxide". <i>Inorganic Materials</i>. <b>38</b> (4): 363–366. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1023%2FA%3A1015105922260">10.1023/A:1015105922260</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Inorganic+Materials&rft.atitle=Structure+and+Properties+of+Mechanically+Activated+Barium+Peroxide&rft.volume=38&rft.issue=4&rft.pages=363-366&rft.date=2002&rft_id=info%3Adoi%2F10.1023%2FA%3A1015105922260&rft.aulast=Massalimov&rft.aufirst=I.+A.&rft.au=Kireeva%2C+M.+S.&rft.au=Sangalov%2C+Yu.+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABarium+peroxide" class="Z3988"></span></span> </li> <li id="cite_note-Ullmann-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-Ullmann_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Ullmann_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHarald_JakobStefan_LeiningerThomas_LehmannSylvia_Jacobi" class="citation encyclopaedia cs1">Harald Jakob; Stefan Leininger; Thomas Lehmann; Sylvia Jacobi; Sven Gutewort. "Peroxo Compounds, Inorganic". <i><a href="/wiki/Ullmann%27s_Encyclopedia_of_Industrial_Chemistry" title="Ullmann's Encyclopedia of Industrial Chemistry">Ullmann's Encyclopedia of Industrial Chemistry</a></i>. Weinheim: Wiley-VCH. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2F14356007.a19_177.pub2">10.1002/14356007.a19_177.pub2</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3527306732" title="Special:BookSources/978-3527306732"><bdi>978-3527306732</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Peroxo+Compounds%2C+Inorganic&rft.btitle=Ullmann%27s+Encyclopedia+of+Industrial+Chemistry&rft.place=Weinheim&rft.pub=Wiley-VCH&rft_id=info%3Adoi%2F10.1002%2F14356007.a19_177.pub2&rft.isbn=978-3527306732&rft.au=Harald+Jakob&rft.au=Stefan+Leininger&rft.au=Thomas+Lehmann&rft.au=Sylvia+Jacobi&rft.au=Sven+Gutewort&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABarium+peroxide" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-12-352651-5" title="Special:BookSources/0-12-352651-5">0-12-352651-5</a>.</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Barium_peroxide&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Barium_oxide" title="Barium oxide">Barium oxide</a></li></ul> <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=Barium_peroxide&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.ilo.org/dyn/icsc/showcard.display?p_lang=en&p_card_id=0381&p_version=2">International Chemical Safety Card 0381</a></li> <li><a rel="nofollow" class="external text" href="http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=en&productNumber=11428&brand=SIAL&PageToGoToURL=http%3A%2F%2Fwww.sigmaaldrich.com%2Fcatalog%2Fsearch%3Finterface%3DAll%26term%3Dbarium%2520peroxide%26lang%3Den%26region%3DUS%26focus%3Dproduct%26N%3D0%2B220003048%2B219853269%2B219853286">MSDS at sigma aldrich</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist 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abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Barium_compounds" title="Template:Barium compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Barium_compounds" title="Template talk:Barium compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Barium_compounds" title="Special:EditPage/Template:Barium compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Barium_compounds" style="font-size:114%;margin:0 4em"><a href="/wiki/Barium_compounds" class="mw-redirect" title="Barium compounds">Barium 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/Barium_hexaboride" title="Barium hexaboride">BaB<sub>6</sub></a></li> <li><a href="/wiki/Barium_borate" title="Barium borate">Ba(BO<sub>2</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_bromide" title="Barium bromide">BaBr<sub>2</sub></a></li> <li><a href="/wiki/Barium_bromate" title="Barium bromate">Ba(BrO<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_acetate" title="Barium acetate">Ba(CH<sub>3</sub>CO<sub>2</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_acetylacetonate" title="Barium acetylacetonate">Ba(C<sub>5</sub>H<sub>7</sub>O<sub>2</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_hypochlorite" title="Barium hypochlorite">Ba(ClO)<sub>2</sub></a></li> <li><a href="/wiki/Barium_carbide" title="Barium carbide">BaC<sub>2</sub></a></li> <li><a href="/wiki/Barium_carbonate" title="Barium carbonate">BaCO<sub>3</sub></a></li> <li><a href="/wiki/Barium_oxalate" title="Barium oxalate">BaC<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Barium_chlorate" title="Barium chlorate">Ba(ClO<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_chloride_fluoride" title="Barium chloride fluoride">BaClF</a></li> <li><a href="/wiki/Barium_perchlorate" title="Barium perchlorate">Ba(ClO<sub>4</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_cyanide" title="Barium cyanide">Ba(CN)<sub>2</sub></a></li> <li><a href="/wiki/Barium_chloride" title="Barium chloride">BaCl<sub>2</sub></a></li> <li><a href="/wiki/Barium_chromate" title="Barium chromate">BaCrO<sub>4</sub></a></li> <li><a href="/wiki/Barium_fluoride" title="Barium fluoride">BaF<sub>2</sub></a></li> <li><a href="/wiki/Barium_ferrate" title="Barium ferrate">BaFeO<sub>4</sub></a></li> <li><a href="/wiki/Barium_ferrite" title="Barium ferrite">BaFe<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Barium_hydride" title="Barium hydride">BaH<sub>2</sub></a></li> <li><a href="/wiki/Barium_iodide" title="Barium iodide">BaI<sub>2</sub></a></li> <li><a href="/wiki/Barium_iodate" title="Barium iodate">Ba(IO<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_manganate" title="Barium manganate">BaMnO<sub>4</sub></a></li> <li><a href="/wiki/Barium_permanganate" title="Barium permanganate">Ba(MnO<sub>4</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_azide" title="Barium azide">Ba(N<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_nitrite" title="Barium nitrite">Ba(NO<sub>2</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_nitrate" title="Barium nitrate">Ba(NO<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_oxide" title="Barium oxide">BaO</a></li> <li><a class="mw-selflink selflink">BaO<sub>2</sub></a></li> <li><a href="/wiki/Barium_hydroxide" title="Barium hydroxide">Ba(OH)<sub>2</sub></a></li> <li><a href="/wiki/Barium_metaphosphate" title="Barium metaphosphate">Ba(PO<sub>3</sub>)<sub>2</sub></a></li> <li><a href="/wiki/Barium_sulfide" title="Barium sulfide">BaS</a></li> <li><a href="/wiki/Barium_selenide" title="Barium selenide">BaSe</a></li> <li><a href="/wiki/Barium_selenate" title="Barium selenate">BaSeO<sub>4</sub></a></li> <li><a href="/wiki/Barium_thiocyanate" title="Barium thiocyanate">Ba(SCN)<sub>2</sub></a></li> <li><a href="/wiki/Barium_sulfite" title="Barium sulfite">BaSO<sub>3</sub></a></li> <li><a href="/wiki/Barium_sulfate" title="Barium sulfate">BaSO<sub>4</sub></a></li> <li><a href="/wiki/Barium_ruthenate" title="Barium ruthenate">BaRuO<sub>3</sub></a></li> <li><a href="/wiki/Barium_stannate" title="Barium stannate">BaSnO<sub>3</sub></a></li> <li><a href="/wiki/Barium_titanate" title="Barium titanate">BaTiO<sub>3</sub></a></li> <li><a href="/wiki/Barium_orthotitanate" title="Barium orthotitanate">Ba<sub>2</sub>TiO<sub>4</sub></a></li> <li><a href="/wiki/Barium_tungstate" title="Barium tungstate">BaWO<sub>4</sub></a></li> <li><a href="/wiki/BaZnGa" title="BaZnGa">BaZnGa</a></li> <li><a href="/wiki/Strontium_barium_niobate" title="Strontium barium niobate">Sr<sub>2</sub>Ba<sub>1−<i>x</i></sub>Nb<sub>2</sub>O<sub>6</sub></a></li> <li><a href="/wiki/Yttrium_barium_copper_oxide" title="Yttrium barium copper oxide">YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−<i>x</i></sub></a></li> <li><a href="/wiki/Barium_hexafluorogermanate" title="Barium hexafluorogermanate"><span class="chemf nowrap">BaGeF<sub class="template-chem2-sub">6</sub></span></a></li> <li><a href="/wiki/Barium_hexafluorosilicate" title="Barium hexafluorosilicate"><span class="chemf nowrap">BaSiF<sub class="template-chem2-sub">6</sub></span></a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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