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Available in 26 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-26" 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">26 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D9%85%D8%B6_%D8%A7%D9%84%D8%B3%D9%8A%D9%84%D9%8A%D9%86%D9%88%D8%B2" title="حمض السيلينوز – Arabic" lang="ar" hreflang="ar" data-title="حمض السيلينوز" 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%B3%D9%84%D9%86%D9%88%D8%B3_%D8%A7%D8%B3%DB%8C%D8%AF" title="سلنوس اسید – South Azerbaijani" lang="azb" hreflang="azb" data-title="سلنوس اسید" 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/%C3%80cid_selen%C3%B3s" title="Àcid selenós – Catalan" lang="ca" hreflang="ca" data-title="Àcid selenós" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Selenige_S%C3%A4ure" title="Selenige Säure – German" lang="de" hreflang="de" data-title="Selenige Säure" 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/%C3%81cido_selenoso" title="Ácido selenoso – Spanish" lang="es" hreflang="es" data-title="Ácido selenoso" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Azido_selenioso" title="Azido selenioso – Basque" lang="eu" hreflang="eu" data-title="Azido selenioso" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D9%84%D9%86%D9%88%D8%B3_%D8%A7%D8%B3%DB%8C%D8%AF" title="سلنوس اسید – Persian" lang="fa" hreflang="fa" data-title="سلنوس اسید" 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/Acide_s%C3%A9l%C3%A9nieux" title="Acide sélénieux – French" lang="fr" hreflang="fr" data-title="Acide sélénieux" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%B2%E0%A5%87%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%B8_%E0%A4%85%E0%A4%AE%E0%A5%8D%E0%A4%B2" title="सेलेनियस अम्ल – Hindi" lang="hi" hreflang="hi" data-title="सेलेनियस अम्ल" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Asam_selenit" title="Asam selenit – Indonesian" lang="id" hreflang="id" data-title="Asam selenit" 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/Acido_selenioso" title="Acido selenioso – Italian" lang="it" hreflang="it" data-title="Acido selenioso" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Selenigzuur" title="Selenigzuur – Dutch" lang="nl" hreflang="nl" data-title="Selenigzuur" 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/%E4%BA%9C%E3%82%BB%E3%83%AC%E3%83%B3%E9%85%B8" title="亜セレン酸 – Japanese" lang="ja" hreflang="ja" data-title="亜セレン酸" 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/Kwas_selenawy" title="Kwas selenawy – Polish" lang="pl" hreflang="pl" data-title="Kwas selenawy" 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/%C3%81cido_selenoso" title="Ácido selenoso – Portuguese" lang="pt" hreflang="pt" data-title="Ácido selenoso" 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/Acid_selenios" title="Acid selenios – Romanian" lang="ro" hreflang="ro" data-title="Acid selenios" 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%A1%D0%B5%D0%BB%D0%B5%D0%BD%D0%B8%D1%81%D1%82%D0%B0%D1%8F_%D0%BA%D0%B8%D1%81%D0%BB%D0%BE%D1%82%D0%B0" title="Селенистая кислота – Russian" lang="ru" hreflang="ru" data-title="Селенистая кислота" 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/Selenous_acid" title="Selenous acid – Simple English" lang="en-simple" hreflang="en-simple" data-title="Selenous acid" 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-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Selenasta_kislina" title="Selenasta kislina – Slovenian" lang="sl" hreflang="sl" data-title="Selenasta kislina" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Selenasta_kiselina" title="Selenasta kiselina – Serbian" lang="sr" hreflang="sr" data-title="Selenasta kiselina" 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/Selenasta_kiselina" title="Selenasta kiselina – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Selenasta kiselina" 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/Seleenihapoke" title="Seleenihapoke – Finnish" lang="fi" hreflang="fi" data-title="Seleenihapoke" 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/Selensyrlighet" title="Selensyrlighet – Swedish" lang="sv" hreflang="sv" data-title="Selensyrlighet" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BB%D0%B5%D0%BD%D0%B8%D1%81%D1%82%D0%B0_%D0%BA%D0%B8%D1%81%D0%BB%D0%BE%D1%82%D0%B0" title="Селениста кислота – Ukrainian" lang="uk" hreflang="uk" 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th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ib-chembox 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>Selenous acid<sup id="cite_ref-hand_1-0" class="reference"><a href="#cite_note-hand-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Selenous-acid-2D.png" class="mw-file-description" title="Structural formula"><img alt="Structural formula" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Selenous-acid-2D.png/250px-Selenous-acid-2D.png" decoding="async" width="150" height="96" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Selenous-acid-2D.png/330px-Selenous-acid-2D.png 2x" data-file-width="1100" data-file-height="701" /></a><figcaption>Structural formula</figcaption></figure> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Selenous-acid-from-xtal-1971-3D-balls.png" class="mw-file-description" title="Ball-and-stick model"><img alt="Ball-and-stick model" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/89/Selenous-acid-from-xtal-1971-3D-balls.png/150px-Selenous-acid-from-xtal-1971-3D-balls.png" decoding="async" width="150" height="127" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/89/Selenous-acid-from-xtal-1971-3D-balls.png/225px-Selenous-acid-from-xtal-1971-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/89/Selenous-acid-from-xtal-1971-3D-balls.png/300px-Selenous-acid-from-xtal-1971-3D-balls.png 2x" data-file-width="1100" data-file-height="928" /></a><figcaption>Ball-and-stick model</figcaption></figure> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Selenous_acid.png" class="mw-file-description" title="Selenous acid on a watchglass"><img alt="Selenous acid on a watchglass" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Selenous_acid.png/250px-Selenous_acid.png" decoding="async" width="220" height="81" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Selenous_acid.png/330px-Selenous_acid.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Selenous_acid.png/500px-Selenous_acid.png 2x" data-file-width="1486" data-file-height="547" /></a><figcaption>Selenous acid on a watchglass</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 names</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Selenous acid<br />Selenic(IV) acid</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;">Selenious acid</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=7783-00-8">7783-00-8</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%5BSe%2B%5D%28%5BO-%5D%29O">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=26642">CHEBI:26642</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/ChEMBL" title="ChEMBL">ChEMBL</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/chembl/explore/compound/ChEMBL2009089">ChEMBL2009089</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.1060.html">1060</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/DrugBank" title="DrugBank">DrugBank</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="www.drugbank.ca"><a rel="nofollow" class="external text" href="https://www.drugbank.ca/drugs/DB11127">DB11127</a></span></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/100.029.067">100.029.067</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q413722#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>231-974-7</li></ul></div> </td></tr> <tr> <td><a href="/wiki/KEGG" title="KEGG">KEGG</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="www.kegg.jp"><a rel="nofollow" class="external text" href="https://www.kegg.jp/entry/D05814">D05814</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;"><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/1091">1091</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>VS7175000</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/F6A27P4Q4R">F6A27P4Q4R</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>3283 2630 </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/DTXSID9024300">DTXSID9024300</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q413722#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/H2O3Se/c1-4(2)3/h(H2,1,2,3)<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: MCAHWIHFGHIESP-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/H2O3Se/c1-4(2)3/h(H2,1,2,3)</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: MCAHWIHFGHIESP-UHFFFAOYAW</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[Se+]([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><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">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span>  </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7002128984000000000♠"></span>128.984</span> g·mol<sup>−1</sup>   </td></tr> <tr> <td>Appearance </td> <td>white <a href="/wiki/Hygroscopic" class="mw-redirect" title="Hygroscopic">hygroscopic</a> crystals </td></tr> <tr> <td><a href="/wiki/Density" title="Density">Density</a> </td> <td>3.0 g/cm<sup>3</sup> </td></tr> <tr> <td><a href="/wiki/Melting_point" title="Melting point">Melting point</a> </td> <td>decomposes at 70 °C </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>very soluble </td></tr> <tr> <td><a href="/wiki/Solubility" title="Solubility">Solubility</a> </td> <td>soluble in <a href="/wiki/Ethanol" title="Ethanol">ethanol</a> </td></tr> <tr> <td><a href="/wiki/Acid_dissociation_constant" title="Acid dissociation constant">Acidity</a> (p<i>K</i><sub>a</sub>) </td> <td>p<i>K</i><sub>a1</sub> = 2.46<br />p<i>K</i><sub>a2</sub> = 7.3<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><a href="/wiki/Conjugate_base" class="mw-redirect" title="Conjugate base">Conjugate base</a> </td> <td><a href="/wiki/Hydrogenselenite" class="mw-redirect" title="Hydrogenselenite">Hydrogenselenite</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>−45.4·10<sup>−6</sup> cm<sup>3</sup>/mol </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Pharmacology </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Route_of_administration" title="Route of administration">Routes of<br />administration</a></div> </td> <td><a href="/wiki/Intravenous_infusion" class="mw-redirect" title="Intravenous infusion">Intravenous infusion</a> </td></tr> <tr> <td><a href="/wiki/Regulation_of_therapeutic_goods" title="Regulation of therapeutic goods">Legal status</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"> <ul><li><small><abbr class="country-name" title="United States">US</abbr>:</small> <a href="/wiki/Prescription_drug" title="Prescription drug">℞-only</a></li></ul></div> </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-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/60px-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/120px-GHS-pictogram-skull.svg.png 1.5x" 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/60px-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/120px-GHS-pictogram-pollu.svg.png 1.5x" data-file-width="724" data-file-height="724" /></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>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="H301: Toxic if swallowed">H301</abbr>, <abbr class="abbr" title="H331: Toxic if inhaled">H331</abbr>, <abbr class="abbr" title="H373: May cause damage to organs through prolonged or repeated exposure">H373</abbr>, <abbr class="abbr" title="H410: Very toxic to aquatic life with long lasting effects">H410</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="P260: Do not breathe dust/fume/gas/mist/vapours/spray.">P260</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="P273: Avoid release to the environment.">P273</abbr>, <abbr class="abbr" title="P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.">P301+P310</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="P311: Call a POISON CENTER or doctor/physician.">P311</abbr>, <abbr class="abbr" title="P314: Get Medical advice/attention if you feel unwell.">P314</abbr>, <abbr class="abbr" title="P321: Specific treatment (see ... on this label).">P321</abbr>, <abbr class="abbr" title="P330: Rinse mouth.">P330</abbr>, <abbr class="abbr" title="P391: Collect spillage.">P391</abbr>, <abbr class="abbr" title="P403+P233: Store in a well ventilated place. Keep container tightly closed.">P403+P233</abbr>, <abbr class="abbr" title="P405: Store locked up.">P405</abbr>, <abbr class="abbr" title="P501: Dispose of contents/container to ...">P501</abbr> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Related compounds </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Other <a href="/wiki/Ion" title="Ion">anions</a></div> </td> <td><a href="/wiki/Selenic_acid" title="Selenic acid">Selenic acid</a><br /><a href="/wiki/Hydrogen_selenide" title="Hydrogen selenide">Hydrogen selenide</a> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Other <a href="/wiki/Ion" title="Ion">cations</a></div> </td> <td><a href="/wiki/Sodium_selenite" title="Sodium selenite">Sodium selenite</a> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Related compounds</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><a href="/wiki/Sulfurous_acid" title="Sulfurous acid">Sulfurous acid</a></li><li><a href="/wiki/Tellurous_acid" title="Tellurous acid">Tellurous acid</a></li><li><a href="/w/index.php?title=Polonous_acid&action=edit&redlink=1" class="new" title="Polonous acid (page does not exist)">Polonous acid</a></li></ul></div> </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=464388887&page2=Selenous+acid">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> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Pharmaceutical compound</div> <style data-mw-deduplicate="TemplateStyles:r1269284339">@media screen{html.skin-theme-clientpref-night .mw-parser-output .dark_mode_safe img{background-color:var(--background-color-inverted,#f8f9fa)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .dark_mode_safe img{background-color:var(--background-color-inverted,#f8f9fa)}}</style> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="border-spacing:2px;"><caption class="infobox-title"><span title="International nonproprietary name (INN): Selenious Acid">Selenious Acid</span></caption><tbody><tr><th colspan="2" class="infobox-header" style="background:#ddd;color:inherit;">Clinical data</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em;"><a href="/wiki/American_Society_of_Health-System_Pharmacists" title="American Society of Health-System Pharmacists">AHFS</a>/<a href="/wiki/Drugs.com" title="Drugs.com">Drugs.com</a></th><td class="infobox-data"><span title="www.drugs.com"><a rel="nofollow" class="external text" href="https://www.drugs.com/monograph/selenious-acid.html">Monograph</a></span></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em;"><a href="/wiki/Regulation_of_therapeutic_goods" title="Regulation of therapeutic goods">License data</a></th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"> <ul><li><small><abbr class="country-name" title="United States">US</abbr></small> <a href="/wiki/DailyMed" title="DailyMed">DailyMed</a>: <span title="dailymed.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://dailymed.nlm.nih.gov/dailymed/search.cfm?labeltype=all&query=Selenious_acid">Selenious_acid</a></span></li></ul></div> </td></tr><tr><th colspan="2" class="infobox-header" style="background:#ddd;color:inherit;">Identifiers</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em;"><a href="/wiki/DrugBank" title="DrugBank">DrugBank</a></th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><span title="www.drugbank.ca"><a rel="nofollow" class="external text" href="https://www.drugbank.ca/drugs/DB11127">DB11127</a></span></li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em;"><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></th><td class="infobox-data"><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/DTXSID9024300">DTXSID9024300</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q413722#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><th scope="row" class="infobox-label" style="line-height:1.2em;"><a href="/wiki/ECHA_InfoCard" class="mw-redirect" title="ECHA InfoCard"><span title="echa.europa.eu">ECHA InfoCard</span></a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://echa.europa.eu/substance-information/-/substanceinfo/100.029.067">100.029.067</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q413722#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></tbody></table> <p><b>Selenous acid</b> (or <b>selenious acid</b>) is the <a href="/wiki/Chemical_compound" title="Chemical compound">chemical 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">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span>. Structurally, it is more accurately described by <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">O=Se(OH)<sub class="template-chem2-sub">2</sub></span>. It is the principal <a href="/wiki/Oxoacid" class="mw-redirect" title="Oxoacid">oxoacid</a> of <a href="/wiki/Selenium" title="Selenium">selenium</a>; the other being <a href="/wiki/Selenic_acid" title="Selenic acid">selenic acid</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Formation_and_properties">Formation and properties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Selenous_acid&action=edit&section=1" title="Edit section: Formation and properties"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Selenous acid is analogous to <a href="/wiki/Sulfurous_acid" title="Sulfurous acid">sulfurous acid</a>, but it is more readily isolated. Selenous acid is easily formed upon the addition of <a href="/wiki/Selenium_dioxide" title="Selenium dioxide">selenium dioxide</a> to water. As a crystalline solid, the compound can be seen as <a href="/wiki/Trigonal_pyramidal_molecular_geometry" title="Trigonal pyramidal molecular geometry">pyramidal molecules</a> that are interconnected with hydrogen bonds. In solution it is a <a href="/wiki/Diprotic" class="mw-redirect" title="Diprotic">diprotic</a> acid:<sup id="cite_ref-3" class="reference"><a href="#cite_note-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">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub> ⇌ H<sup class="template-chem2-sup">+</sup> + HSeO<span class="template-chem2-su"><span>−</span><span>3</span></span></span> <span style="padding-left:2.5em;"> </span>(p<i>K</i><sub>a</sub> = 2.62)</dd> <dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">HSeO<span class="template-chem2-su"><span>−</span><span>3</span></span> ⇌ H<sup class="template-chem2-sup">+</sup> + SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span></span> <span style="padding-left:2.5em;"> </span>(p<i>K</i><sub>a</sub> = 8.32)</dd></dl> <p>It is moderately oxidizing in nature, but kinetically slow. In 1 M <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">H<sup class="template-chem2-sup">+</sup></span>: </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>SeO<sub class="template-chem2-sub">3</sub> + 4 H<sup class="template-chem2-sup">+</sup> + 4 e<sup class="template-chem2-sup">−</sup> ⇌ Se + 3 H<sub class="template-chem2-sub">2</sub>O</span> <span style="padding-left:2.5em;"> </span>(<i>E</i><sup><s>o</s></sup> = +0.74 V)</dd></dl> <p>In 1 M <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">OH<sup class="template-chem2-sup">−</sup></span>: </p> <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span> + 4 e<sup class="template-chem2-sup">−</sup> + 3 H<sub class="template-chem2-sub">2</sub>O ⇌ Se + 6 OH<sup class="template-chem2-sup">−</sup></span> <span style="padding-left:2.5em;"> </span>(<i>E</i><sup><s>o</s></sup> = −0.37 V)</dd></dl> <p>Selenous acid is <a href="/wiki/Hygroscopic" class="mw-redirect" title="Hygroscopic">hygroscopic</a>.<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><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Uses">Uses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Selenous_acid&action=edit&section=2" title="Edit section: Uses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The major use is in protecting and changing the color of steel, especially steel parts on firearms.<sup id="cite_ref-Scarlato1990_6-0" class="reference"><a href="#cite_note-Scarlato1990-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The so-called <a href="/wiki/Bluing_(steel)" title="Bluing (steel)">cold-bluing</a> process uses selenous acid, <a href="/wiki/Copper(II)_nitrate" title="Copper(II) nitrate">copper(II) nitrate</a>, and <a href="/wiki/Nitric_acid" title="Nitric acid">nitric acid</a> to change the color of the steel from silver-grey to blue-grey or black. Alternative procedures use <a href="/wiki/Copper(II)_sulfate" title="Copper(II) sulfate">copper sulfate</a> and <a href="/wiki/Phosphoric_acid" title="Phosphoric acid">phosphoric acid</a> instead. This process deposits a coating of <a href="/wiki/Copper_selenide" title="Copper selenide">copper selenide</a> and is fundamentally different from other bluing processes which generate <a href="/wiki/Iron(II,III)_oxide" title="Iron(II,III) oxide">black iron oxide</a>. Some older razor blades were also made of blued steel.<sup id="cite_ref-Scarlato1990_6-1" class="reference"><a href="#cite_note-Scarlato1990-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Another use for selenious acid is the chemical darkening and <a href="/wiki/Patination" class="mw-redirect" title="Patination">patination</a> of copper, brass and bronze, producing a rich dark brown color that can be further enhanced with mechanical abrasion.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (September 2009)">citation needed</span></a></i>]</sup> </p><p>It is used in <a href="/wiki/Organic_synthesis" title="Organic synthesis">organic synthesis</a> as an oxidizing agent for the synthesis of <a href="/wiki/Dicarbonyl#1,2-Dicarbonyls" title="Dicarbonyl">1,2-dicarbonyl</a> compounds, e.g. in laboratory preparation of <a href="/wiki/Glyoxal" title="Glyoxal">glyoxal</a> (oxaldehyde) from <a href="/wiki/Acetaldehyde" title="Acetaldehyde">acetaldehyde</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>Selenious acid is a key component of the <a href="/wiki/Mecke_reagent" title="Mecke reagent">Mecke reagent</a> used for drug checking.<sup id="cite_ref-NIJ_8-0" class="reference"><a href="#cite_note-NIJ-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Medical">Medical</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Selenous_acid&action=edit&section=3" title="Edit section: Medical"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Selenous acid can supply the trace element <a href="/wiki/Indication_(medicine)" title="Indication (medicine)">indicated</a> in people as a source of selenium.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Health_effects">Health effects</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Selenous_acid&action=edit&section=4" title="Edit section: Health effects"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Like many selenium compounds, selenous acid is highly toxic in excessive quantities, and ingestion of any significant quantity of selenous acid is usually fatal, however it is an approved dietary source in proper amounts. Symptoms of <a href="/wiki/Selenium_poisoning" class="mw-redirect" title="Selenium poisoning">selenium poisoning</a> can occur several hours after exposure, and may include <a href="/wiki/Stupor" title="Stupor">stupor</a>, <a href="/wiki/Nausea" title="Nausea">nausea</a>, severe <a href="/wiki/Hypotension" title="Hypotension">hypotension</a> and death. </p> <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=Selenous_acid&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-hand-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-hand_1-0">^</a></b></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="CITEREFLide1998" class="citation book cs1">Lide DR (1998). <i>Handbook of Chemistry and Physics</i> (87 ed.). Boca Raton, Florida: CRC Press. pp. <span class="nowrap">4–</span>81. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8493-0594-2" title="Special:BookSources/0-8493-0594-2"><bdi>0-8493-0594-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+Florida&rft.pages=%3Cspan+class%3D%22nowrap%22%3E4-%3C%2Fspan%3E81&rft.edition=87&rft.pub=CRC+Press&rft.date=1998&rft.isbn=0-8493-0594-2&rft.aulast=Lide&rft.aufirst=DR&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></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"><a rel="nofollow" class="external text" href="http://www2.ucdsb.on.ca/tiss/stretton/database/polyprotic_acids.htm">K<sub>a</sub> and pK<sub>a</sub> for Polyprotic Acids</a>. ucdsb.on.ca</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFHollemanWiberg2001" class="citation book cs1">Holleman AF, Wiberg E (2001). <i>Inorganic Chemistry</i>. San Diego: Academic Press. <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"><bdi>0-12-352651-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Inorganic+Chemistry&rft.place=San+Diego&rft.pub=Academic+Press&rft.date=2001&rft.isbn=0-12-352651-5&rft.aulast=Holleman&rft.aufirst=AF&rft.au=Wiberg%2C+E&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" 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"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFLide1995" class="citation book cs1">Lide DR, ed. (1995). <i>CRC Handbook of Chemistry and Physics</i> (76th ed.). Boca Raton, FL: CRC Press Inc. pp. <span class="nowrap">4–</span>82.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=CRC+Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+FL&rft.pages=%3Cspan+class%3D%22nowrap%22%3E4-%3C%2Fspan%3E82&rft.edition=76th&rft.pub=CRC+Press+Inc.&rft.date=1995&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</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://pubchem.ncbi.nlm.nih.gov/compound/1091">"Selenious acid"</a>. <i>PubChem</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-01-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=PubChem&rft.atitle=Selenious+acid&rft_id=https%3A%2F%2Fpubchem.ncbi.nlm.nih.gov%2Fcompound%2F1091&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-Scarlato1990-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-Scarlato1990_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Scarlato1990_6-1"><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="CITEREFScarlatoHiga1990" class="citation web cs1">Scarlato EA, Higa J (28 June 1990). <a rel="nofollow" class="external text" href="http://www.inchem.org/documents/pims/chemical/pim483.htm#4.%20USES/HIGH%20RISK%20CIRCUMSTANCES%20OF%20POISONING">"SELENIUM (PIM483)"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">29 December</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=SELENIUM+%28PIM483%29&rft.date=1990-06-28&rft.aulast=Scarlato&rft.aufirst=EA&rft.au=Higa%2C+J&rft_id=http%3A%2F%2Fwww.inchem.org%2Fdocuments%2Fpims%2Fchemical%2Fpim483.htm%234.%2520USES%2FHIGH%2520RISK%2520CIRCUMSTANCES%2520OF%2520POISONING&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.orgsyn.org/demo.aspx?prep=CV3P0438">"Glyoxal Bisulfite"</a>, Organic Syntheses, Collected Volume 3, p.438 (1955).</span> </li> <li id="cite_note-NIJ-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-NIJ_8-0">^</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://www.ncjrs.gov/pdffiles1/nij/183258.pdf">"Colour Test Reagents-Kits for Preliminary Identification of Drugs of Abuse"</a> <span class="cs1-format">(PDF)</span>. National Institute of Justice. 2000-07-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2012-01-26</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Colour+Test+Reagents-Kits+for+Preliminary+Identification+of+Drugs+of+Abuse&rft.pub=National+Institute+of+Justice&rft.date=2000-07-01&rft_id=https%3A%2F%2Fwww.ncjrs.gov%2Fpdffiles1%2Fnij%2F183258.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</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/20061018155315/http://www.sirchie.com/msds/NARK20010.pdf">"Material Safety Data Sheet - Product Name: Reagent for Special Opiates"</a> <span class="cs1-format">(PDF)</span>. Sirchie Finger Print Laboratories, Inc. May 12, 2006. Archived from <a rel="nofollow" class="external text" href="https://www.sirchie.com/msds/NARK20010.pdf">the original</a> <span class="cs1-format">(PDF)</span> on October 18, 2006.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Material+Safety+Data+Sheet+-+Product+Name%3A+Reagent+for+Special+Opiates&rft.pub=Sirchie+Finger+Print+Laboratories%2C+Inc.&rft.date=2006-05-12&rft_id=https%3A%2F%2Fwww.sirchie.com%2Fmsds%2FNARK20010.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</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://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=49324999-50e3-43ed-a8dd-156d6dbedd9f">"Selenious acid injection, solution"</a>. <i>DailyMed</i>. 1 May 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">22 October</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=DailyMed&rft.atitle=Selenious+acid+injection%2C+solution&rft.date=2020-05-01&rft_id=https%3A%2F%2Fdailymed.nlm.nih.gov%2Fdailymed%2FdrugInfo.cfm%3Fsetid%3D49324999-50e3-43ed-a8dd-156d6dbedd9f&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</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://www.accessdata.fda.gov/drugsatfda_docs/nda/2019/209379Orig1s000TOC.cfm">"Drug Approval Package: Selenious Acid Injection"</a>. <i>U.S. <a href="/wiki/Food_and_Drug_Administration" title="Food and Drug Administration">Food and Drug Administration</a> (FDA)</i><span class="reference-accessdate">. Retrieved <span class="nowrap">22 October</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=U.S.+Food+and+Drug+Administration+%28FDA%29&rft.atitle=Drug+Approval+Package%3A+Selenious+Acid+Injection&rft_id=https%3A%2F%2Fwww.accessdata.fda.gov%2Fdrugsatfda_docs%2Fnda%2F2019%2F209379Orig1s000TOC.cfm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></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=Selenous_acid&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://druginfo.nlm.nih.gov/drugportal/name/selenious%20acid">"Selenious acid"</a>. <i>Drug Information Portal</i>. U.S. National Library of Medicine.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Drug+Information+Portal&rft.atitle=Selenious+acid&rft_id=https%3A%2F%2Fdruginfo.nlm.nih.gov%2Fdrugportal%2Fname%2Fselenious%2520acid&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenous+acid" class="Z3988"></span></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 li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol 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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="Hydrogen_compounds22" 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" /><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a 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:Hydrogen_compounds" title="Template:Hydrogen compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Hydrogen_compounds" title="Template talk:Hydrogen compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Hydrogen_compounds" title="Special:EditPage/Template:Hydrogen compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Hydrogen_compounds22" style="font-size:114%;margin:0 4em"><a href="/wiki/Hydrogen_compounds" title="Hydrogen compounds">Hydrogen 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/Arsenous_acid" title="Arsenous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>AsO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Arsenic_acid" title="Arsenic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>AsO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Argon_fluorohydride" title="Argon fluorohydride">HArF</a></li> <li><a href="/wiki/Hydrogen_astatide" title="Hydrogen astatide">HAt</a></li> <li><a href="/wiki/Fluorosulfuric_acid" title="Fluorosulfuric acid"><span class="chemf nowrap">HSO<sub class="template-chem2-sub">3</sub>F</span></a></li> <li><a href="/wiki/Fluoroboric_acid" title="Fluoroboric acid"><span class="chemf nowrap">H[BF<sub class="template-chem2-sub">4</sub>]</span></a></li> <li><a href="/wiki/Hydrogen_bromide" title="Hydrogen bromide">HBr</a></li> <li><a href="/wiki/Hypobromous_acid" title="Hypobromous acid">HBrO</a></li> <li><a href="/wiki/Bromous_acid" title="Bromous acid"><span class="chemf nowrap">HBrO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Bromic_acid" title="Bromic acid"><span class="chemf nowrap">HBrO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Perbromic_acid" title="Perbromic acid"><span class="chemf nowrap">HBrO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Hydrogen_chloride" title="Hydrogen chloride">HCl</a></li> <li><a href="/wiki/Hypochlorous_acid" title="Hypochlorous acid">HClO</a></li> <li><a href="/wiki/Chlorous_acid" title="Chlorous acid"><span class="chemf nowrap">HClO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Chloric_acid" title="Chloric acid"><span class="chemf nowrap">HClO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Perchloric_acid" title="Perchloric acid"><span class="chemf nowrap">HClO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Hydrogen_cyanide" title="Hydrogen cyanide">HCN</a></li> <li><a href="/wiki/Fulminic_acid" title="Fulminic acid">HCNO</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/Carbonic_acid" title="Carbonic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>CO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Thiocarbonic_acid" title="Thiocarbonic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>CS<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Hydrogen_fluoride" title="Hydrogen fluoride">HF</a></li> <li><a href="/wiki/Hypofluorous_acid" title="Hypofluorous acid">HFO</a></li> <li><a href="/wiki/Hydrogen_iodide" title="Hydrogen iodide">HI</a></li> <li><a href="/wiki/Hypoiodous_acid" title="Hypoiodous acid">HIO</a></li> <li><a href="/wiki/Iodous_acid" title="Iodous acid"><span class="chemf nowrap">HIO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Iodic_acid" title="Iodic acid"><span class="chemf nowrap">HIO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Periodic_acid" title="Periodic acid"><span class="chemf nowrap">HIO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Permanganic_acid" title="Permanganic acid"><span class="chemf nowrap">HMnO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Manganic_acid" class="mw-redirect" title="Manganic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>MnO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Molybdic_acid" title="Molybdic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>MoO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Hydrogen_isocyanide" title="Hydrogen isocyanide">HNC</a></li> <li><a href="/wiki/Sodium_bicarbonate" title="Sodium bicarbonate"><span class="chemf nowrap">NaHCO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Isocyanic_acid" title="Isocyanic acid">HNCO</a></li> <li><a href="/wiki/Nitroxyl" title="Nitroxyl">HNO</a></li> <li><a href="/wiki/Nitrous_acid" title="Nitrous acid"><span class="chemf nowrap">HNO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Nitric_acid" title="Nitric acid"><span class="chemf nowrap">HNO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Hyponitrous_acid" title="Hyponitrous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>N<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Nitrosylsulfuric_acid" title="Nitrosylsulfuric acid"><span class="chemf nowrap">HNO<sub class="template-chem2-sub">5</sub>S</span></a></li> <li><a href="/wiki/Sulfamic_acid" title="Sulfamic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>NSO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Properties_of_water" title="Properties of water"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>O</span></a></li> <li><a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Trioxidane" title="Trioxidane"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Tetraoxidane" title="Tetraoxidane"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Pentaoxidane" title="Pentaoxidane"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">5</sub></span></a></li> <li><a href="/wiki/Hypophosphorous_acid" title="Hypophosphorous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>PO<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Phosphorous_acid" title="Phosphorous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>PO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Phosphoric_acid" title="Phosphoric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>PO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Pyrophosphoric_acid" title="Pyrophosphoric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">4</sub>P<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">7</sub></span></a></li> <li><a href="/wiki/Triphosphoric_acid" title="Triphosphoric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">5</sub>P<sub class="template-chem2-sub">3</sub>O<sub class="template-chem2-sub">10</sub></span></a></li> <li><a href="/wiki/Chloroplatinic_acid" title="Chloroplatinic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>[PtCl<sub class="template-chem2-sub">6</sub>]</span></a></li> <li><a href="/wiki/Hydrogen_sulfide" title="Hydrogen sulfide"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S</span></a></li> <li><a href="/wiki/Hydrogen_disulfide" title="Hydrogen disulfide"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Hydrogen_selenide" title="Hydrogen selenide"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>Se</span></a></li> <li><a class="mw-selflink selflink"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Selenic_acid" title="Selenic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Silicic_acid" title="Silicic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">4</sub>SiO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Hexafluorosilicic_acid" title="Hexafluorosilicic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>[SiF<sub class="template-chem2-sub">6</sub>]</span></a></li> <li><a href="/wiki/Thiocyanic_acid" title="Thiocyanic acid">HSCN</a></li> <li><a href="/wiki/Isothiocyanic_acid" class="mw-redirect" title="Isothiocyanic acid">HNCS</a></li> <li><a href="/wiki/Sulfurous_acid" title="Sulfurous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Sulfuric_acid" title="Sulfuric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Peroxymonosulfuric_acid" title="Peroxymonosulfuric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SO<sub class="template-chem2-sub">5</sub></span></a></li> <li><a href="/wiki/Thiosulfuric_acid" title="Thiosulfuric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Trihydrogen_oxide" title="Trihydrogen oxide"><span class="chemf nowrap">H<sub class="template-chem2-sub">3</sub>O</span></a></li> <li><a href="/wiki/Dithionic_acid" title="Dithionic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">6</sub></span></a></li> <li><a href="/wiki/Disulfuric_acid" title="Disulfuric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">7</sub></span></a></li> <li><a href="/wiki/Peroxydisulfuric_acid" title="Peroxydisulfuric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>S<sub class="template-chem2-sub">2</sub>O<sub class="template-chem2-sub">8</sub></span></a></li> <li><a href="/wiki/Triflic_acid" title="Triflic acid"><span class="chemf nowrap">CF<sub class="template-chem2-sub">3</sub>SO<sub class="template-chem2-sub">3</sub>H</span></a></li> <li><a href="/wiki/Hydrogen_telluride" title="Hydrogen telluride"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>Te</span></a></li> <li><a href="/wiki/Tellurous_acid" title="Tellurous acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>TeO<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Telluric_acid" title="Telluric acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">6</sub>TeO<sub class="template-chem2-sub">6</sub></span></a></li> <li><a href="/wiki/Titanic_acid" title="Titanic acid"><span class="chemf nowrap">H<sub class="template-chem2-sub">4</sub>TiO<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Polonium_hydride" title="Polonium hydride"><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>Po</span></a></li> <li><a href="/wiki/Cobalt_tetracarbonyl_hydride" title="Cobalt tetracarbonyl hydride"><span class="chemf nowrap">H[Co(CO)<sub class="template-chem2-sub">4</sub>]</span></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" /><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="Selenium_compounds70" 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:Selenium_compounds" title="Template:Selenium compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Selenium_compounds" title="Template talk:Selenium compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Selenium_compounds" title="Special:EditPage/Template:Selenium compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Selenium_compounds70" style="font-size:114%;margin:0 4em"><a href="/wiki/Selenium" title="Selenium">Selenium</a> compounds</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(−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/Selenide" title="Selenide">Se<sup>2−</sup></a></li> <li><a href="/wiki/Hydrogen_selenide" title="Hydrogen selenide">H<sub>2</sub>Se</a></li> <li><a href="/wiki/Aluminium_selenide" title="Aluminium selenide">Al<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Antimony_triselenide" title="Antimony triselenide">Sb<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Arsenic_triselenide" title="Arsenic triselenide">As<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Bismuth_selenide" title="Bismuth selenide">Bi<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Cadmium_selenide" title="Cadmium selenide">CdSe</a></li> <li><a href="/wiki/Calcium_selenide" title="Calcium selenide">CaSe</a></li> <li><a href="/wiki/Carbon_diselenide" title="Carbon diselenide">CSe<sub>2</sub></a></li> <li><a href="/wiki/Carbonyl_selenide" title="Carbonyl selenide">OCSe</a></li> <li><a href="/wiki/Chromium(II)_selenide" title="Chromium(II) selenide">CrSe</a></li> <li><a href="/wiki/Cobalt(II)_selenide" title="Cobalt(II) selenide">CoSe</a></li> <li><a href="/wiki/Copper_selenide" title="Copper selenide">CuSe</a></li> <li><a href="/wiki/Dimethyl_selenide" title="Dimethyl selenide">(CH<sub>3</sub>)<sub>2</sub>Se</a></li> <li><a href="/wiki/Gallium(II)_selenide" title="Gallium(II) selenide">GaSe</a></li> <li><a href="/wiki/Gallium(III)_selenide" title="Gallium(III) selenide">Ga<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Germanium_monoselenide" title="Germanium monoselenide">GeSe</a></li> <li><a href="/wiki/Indium(III)_selenide" title="Indium(III) selenide">In<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Iron(II)_selenide" title="Iron(II) selenide">FeSe</a></li> <li><a href="/wiki/Lead_selenide" title="Lead selenide">PbSe</a></li> <li><a href="/wiki/Magnesium_selenide" title="Magnesium selenide">MgSe</a></li> <li><a href="/wiki/Manganese(II)_selenide" title="Manganese(II) selenide">MnSe</a></li> <li><a href="/wiki/Manganese_diselenide" title="Manganese diselenide">MnSe<sub>2</sub></a></li> <li><a href="/wiki/Mercury_selenide" title="Mercury selenide">HgSe</a></li> <li><a href="/wiki/Molybdenum_diselenide" title="Molybdenum diselenide">MoSe<sub>2</sub></a></li> <li><a href="/wiki/Nickel_selenide" title="Nickel selenide">NiSe</a></li> <li><a href="/wiki/Niobium_diselenide" title="Niobium diselenide">NbSe<sub>2</sub></a></li> <li><a href="/wiki/Niobium_triselenide" title="Niobium triselenide">NbSe<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_selenide" title="Phosphorus selenide">P<sub><i>x</i></sub>Se<sub><i>y</i></sub></a></li> <li><a href="/wiki/Plutonium_selenide" title="Plutonium selenide">PuSe</a></li> <li><a href="/wiki/Rhenium_diselenide" title="Rhenium diselenide">ReSe<sub>2</sub></a></li> <li><a href="/wiki/Samarium_selenide" class="mw-redirect" title="Samarium selenide">Sm<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Silver(I)_selenide" title="Silver(I) selenide">Ag<sub>2</sub>Se</a></li> <li><a href="/wiki/Sodium_selenide" title="Sodium selenide">Na<sub>2</sub>Se</a></li> <li><a href="/wiki/Tin_selenide" title="Tin selenide">SnSe</a></li> <li><a href="/wiki/Titanium_diselenide" title="Titanium diselenide">TiSe<sub>2</sub></a></li> <li><a href="/wiki/Tungsten_diselenide" title="Tungsten diselenide">WSe<sub>2</sub></a></li> <li><a href="/wiki/Uranium_diselenide" title="Uranium diselenide">USe<sub>2</sub></a></li> <li><a href="/wiki/Zinc_selenide" title="Zinc selenide">ZnSe</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(0,I)</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/Selenium_disulfide#Chemical_composition" title="Selenium disulfide">Se<sub>3</sub>S<sub>5</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(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/Selenium_hexasulfide" title="Selenium hexasulfide">Se<sub>2</sub>S<sub>6</sub></a></li> <li><a href="/wiki/Selenium_monochloride" title="Selenium monochloride">Se<sub>2</sub>Cl<sub>2</sub></a></li> <li><span class="chemf nowrap"><a href="/wiki/Selenocysteine" title="Selenocysteine">C<sub class="template-chem2-sub">3</sub>H<sub class="template-chem2-sub">7</sub>NO<sub class="template-chem2-sub">2</sub>Se</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(II)</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/Selenium_dibromide" title="Selenium dibromide">SeBr<sub>2</sub></a></li> <li><a href="/wiki/Selenium_dichloride" title="Selenium dichloride">SeCl<sub>2</sub></a></li> <li><a href="/wiki/Selenium_disulfide" title="Selenium disulfide">SeS<sub>2</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(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><span class="chemf nowrap"><a href="/wiki/Selenite_(ion)" title="Selenite (ion)">SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span></a></span></li> <li><a href="/wiki/Selenium_tetrabromide" title="Selenium tetrabromide">SeBr<sub>4</sub></a></li> <li><a href="/wiki/Selenium_tetrachloride" title="Selenium tetrachloride">SeCl<sub>4</sub></a></li> <li><a href="/wiki/Selenium_tetrafluoride" title="Selenium tetrafluoride">SeF<sub>4</sub></a></li> <li><a href="/wiki/Selenium_dioxide" title="Selenium dioxide">SeO<sub>2</sub></a></li> <li><a href="/wiki/Selenium_disulfide" title="Selenium disulfide">SeS<sub>2</sub></a></li> <li><a href="/wiki/Seleninyl_fluoride" title="Seleninyl fluoride">SeOF<sub>2</sub></a></li> <li><a href="/wiki/Selenium_oxydichloride" title="Selenium oxydichloride">SeOCl<sub>2</sub></a></li> <li><a href="/wiki/Selenium_oxybromide" title="Selenium oxybromide">SeOBr<sub>2</sub></a></li> <li><a class="mw-selflink selflink">H<sub>2</sub>SeO<sub>3</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(VI)</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><span class="chemf nowrap"><a href="/wiki/Selenate" title="Selenate">SeO<span class="template-chem2-su"><span>2−</span><span>4</span></span></a></span></li> <li><a href="/wiki/Selenium_hexafluoride" title="Selenium hexafluoride">SeF<sub>6</sub></a></li> <li><a href="/wiki/Selenium_trioxide" title="Selenium trioxide">SeO<sub>3</sub></a></li> <li><a href="/wiki/Selenoyl_fluoride" title="Selenoyl fluoride">SeO<sub>2</sub>F<sub>2</sub></a></li> <li><a href="/wiki/Selenic_acid" title="Selenic acid">H<sub>2</sub>SeO<sub>4</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(IV,VI)</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><span class="chemf nowrap"><a href="/wiki/Selenate_selenite" title="Selenate selenite">SeO<span class="template-chem2-su"><span>2−</span><span>4</span></span> + SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span></a></span></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="Salts_and_covalent_derivatives_of_the_selenite_ion151" style="display:table;;padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit;table-layout:fixed;"><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:Selenites" title="Template:Selenites"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Selenites" title="Template talk:Selenites"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Selenites" title="Special:EditPage/Template:Selenites"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Salts_and_covalent_derivatives_of_the_selenite_ion151" style="font-size:114%;margin:0 4em">Salts and covalent derivatives of the <a href="/wiki/Selenite_(ion)" title="Selenite (ion)">selenite</a> ion</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;border-width:0;"><div style="padding:0"><div class="mw-collapsible-content" style="overflow-x:auto"> <table class="center"> <tbody><tr style="background-color:mistyrose"> <td><a class="mw-selflink selflink"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">H<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td style="background-color:white;color:inherit;border:none"> </td> <td style="background-color:white;color:inherit;border:none" colspan="11" rowspan="3"> </td> <td style="background-color:white;color:inherit;border:none" colspan="5"> </td> <td>He </td></tr> <tr style="background-color:mistyrose;color:black;"> <td>Li </td> <td>Be </td> <td><a href="/wiki/Boroselenite" title="Boroselenite">B<sub>x</sub>Se<sub>x</sub>O<sub>x</sub></a> </td> <td>C </td> <td><a href="/wiki/Nitrate_selenite" title="Nitrate selenite">+NO<sub>3</sub></a> </td> <td>O </td> <td><a href="/wiki/Selenite_fluoride" title="Selenite fluoride">+F</a> </td> <td>Ne </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/wiki/Sodium_selenite" title="Sodium selenite"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Na<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Mg </td> <td>Al </td> <td>Si </td> <td>P </td> <td><a href="/wiki/Selenite_sulfate" title="Selenite sulfate">+<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">SO<sub class="template-chem2-sub">4</sub></span></a> </td> <td>Cl </td> <td>Ar </td></tr> <tr style="background-color:mistyrose;color:black;"> <td>K </td> <td>Ca </td> <td style="background-color:white;color:inherit;border:none"> </td> <td>Sc </td> <td>Ti </td> <td>V </td> <td>Cr </td> <td><a href="/w/index.php?title=Manganese_selenite&action=edit&redlink=1" class="new" title="Manganese selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">MnSeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td><a href="/wiki/Iron(III)_selenite" title="Iron(III) selenite"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Fe<sub class="template-chem2-sub">2</sub>(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Co </td> <td>Ni </td> <td><a href="/wiki/Copper(II)_selenite" title="Copper(II) selenite"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CuSeO<sub class="template-chem2-sub">3</sub></span></a><br /><a href="/wiki/Copper_oxide_selenite" title="Copper oxide selenite"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Cu<sub class="template-chem2-sub">2</sub>OSeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td><a href="/w/index.php?title=Zinc_selenite&action=edit&redlink=1" class="new" title="Zinc selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">ZnSeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Ga </td> <td>Ge </td> <td>As </td> <td><a href="/wiki/Selenate_selenite" title="Selenate selenite">+<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">SeO<sub class="template-chem2-sub">4</sub></span></a> </td> <td>Br </td> <td>Kr </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/w/index.php?title=Rubidium_selenite&action=edit&redlink=1" class="new" title="Rubidium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">RbHSeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Sr </td> <td style="background-color:white;color:inherit;border:none"> </td> <td>Y </td> <td>Zr </td> <td>Nb </td> <td>Mo </td> <td>Tc </td> <td>Ru </td> <td>Rh </td> <td>Pd </td> <td><a href="/wiki/Silver_selenite" title="Silver selenite"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Ag<sub class="template-chem2-sub">2</sub>SeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Cd </td> <td>In </td> <td>Sn </td> <td>Sb </td> <td>Te </td> <td>I </td> <td>Xe </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/w/index.php?title=Caesium_selenite&action=edit&redlink=1" class="new" title="Caesium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">CsHSeO<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Ba </td> <td style="background-color:white;color:inherit;border:none">* </td> <td>Lu </td> <td>Hf </td> <td>Ta </td> <td>W </td> <td>Re </td> <td>Os </td> <td>Ir </td> <td>Pt </td> <td>Au </td> <td>Hg </td> <td>Tl </td> <td>Pb </td> <td>Bi </td> <td>Po </td> <td>At </td> <td>Rn </td></tr> <tr style="background-color:mistyrose;color:black;"> <td>Fr </td> <td>Ra </td> <td style="background-color:white;color:inherit;border:none">** </td> <td>Lr </td> <td>Rf </td> <td>Db </td> <td>Sg </td> <td>Bh </td> <td>Hs </td> <td>Mt </td> <td>Ds </td> <td>Rg </td> <td>Cn </td> <td>Nh </td> <td>Fl </td> <td>Mc </td> <td>Lv </td> <td>Ts </td> <td>Og </td></tr> <tr> <td style="background-color:white;color:inherit;border:none" colspan="2" rowspan="3"> </td> <td style="background-color:white;color:inherit;border:none" colspan="20">  </td></tr> <tr style="background-color:mistyrose;color:black;"> <td style="background-color:white;color:inherit;border:none">* </td> <td>La </td> <td><a href="/w/index.php?title=Cerium(III)_selenite&action=edit&redlink=1" class="new" title="Cerium(III) selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Ce<sub class="template-chem2-sub">2</sub>(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a> </td> <td><a href="/w/index.php?title=Praseodymium_selenite&action=edit&redlink=1" class="new" title="Praseodymium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Pr<sub class="template-chem2-sub">2</sub>(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a> </td> <td><a href="/w/index.php?title=Neodymium_selenite&action=edit&redlink=1" class="new" title="Neodymium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Nd<sub class="template-chem2-sub">2</sub>(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Pm </td> <td><a href="/w/index.php?title=Samarium_selenite&action=edit&redlink=1" class="new" title="Samarium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Sm<sub class="template-chem2-sub">2</sub>(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">3</sub></span></a> </td> <td>Eu </td> <td>Gd </td> <td>Tb </td> <td>Dy </td> <td>Ho </td> <td>Er </td> <td>Tm </td> <td>Yb </td></tr> <tr style="background-color:mistyrose;color:black;"> <td style="background-color:white;color:inherit;border:none">** </td> <td>Ac </td> <td><a href="/w/index.php?title=Thorium_selenite&action=edit&redlink=1" class="new" title="Thorium selenite (page does not exist)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410" /><span class="chemf nowrap">Th(SeO<sub class="template-chem2-sub">3</sub>)<sub class="template-chem2-sub">2</sub></span></a> </td> <td>Pa </td> <td>U </td> <td>Np </td> <td>Pu </td> <td>Am </td> <td>Cm </td> <td>Bk </td> <td>Cf </td> <td>Es </td> <td>Fm </td> <td>Md </td> <td>No </td></tr></tbody></table></div> </div></td></tr></tbody></table></div> <style 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