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class="main-content"><app-messages _ngcontent-sc118="" _nghost-sc111=""></app-messages><div _ngcontent-sc118="" class="col-lg-12 col-md-12 col-sm-12 col-xs-12 padding-bottom-40"><div _ngcontent-sc118="" class="row"><div _ngcontent-sc118="" class="col-lg-10 col-md-10 col-sm-10 col-xs-10 no-padding"><h1 _ngcontent-sc118="" class="detail-title">Sodium hydrosulfide</h1></div><div _ngcontent-sc118="" class="col-lg-2 col-md-2 col-sm-2 col-xs-2 no-padding"><app-detail-download-button _ngcontent-sc118="" _nghost-sc112=""><button _ngcontent-sc112="" aria-label="Download Substance Molfile" class="download-button"></button></app-detail-download-button></div></div><div _ngcontent-sc118="" class="col-lg-4 col-md-5 no-padding"><detail-summary _ngcontent-sc118="" _nghost-sc115=""><div _ngcontent-sc115="" class="detail-content-box detail-content-box-left"><h3 _ngcontent-sc115="" class="rn">CAS Registry Number<sup _ngcontent-sc115="">®</sup></h3><div _ngcontent-sc115="" class="cas-registry-number"> 16721-80-5 </div><app-multi-image _ngcontent-sc115="" _nghost-sc114=""><div _ngcontent-sc114="" class="structure-image-container"><app-svg-box _ngcontent-sc114="" _nghost-sc113=""><div _ngcontent-sc113="" class="image-wrapper"><svg width="100" viewBox="0 0 100 15" style="fill-opacity:1;color-rendering:auto;color-interpolation:auto;text-rendering:auto;stroke:black;stroke-linecap:square;stroke-miterlimit:10;shape-rendering:auto;stroke-opacity:1;fill:black;stroke-dasharray:none;font-weight:normal;stroke-width:1;font-family:'Open Sans';font-style:normal;stroke-linejoin:miter;font-size:12;stroke-dashoffset:0;image-rendering:auto;width:100%;height:auto;" height="15" class="cas-substance-image" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><svg class="cas-substance-single-component"><rect y="0" x="0" width="100" stroke="none" ry="7" rx="7" height="15" fill="white" class="cas-substance-group"></rect><svg y="0" x="23" width="53" viewBox="0 0 53 15" style="fill:black;" height="15" class="cas-substance-single-component-image"><svg><g><g transform="translate(25,7)" style="text-rendering:geometricPrecision; color-rendering:optimizeQuality; color-interpolation:linearRGB; stroke-linecap:butt; image-rendering:optimizeQuality;"><line y2="0" y1="0" x2="10.3567" x1="-6.2109" style="fill:none;"></line><path style="stroke-linecap:square; stroke:none;" d="M-15.0859 4.1562 L-16.2266 4.1562 L-20.9141 -3.0312 L-20.9609 -3.0312 Q-20.8672 -1.7656 -20.8672 -0.7188 L-20.8672 4.1562 L-21.7891 4.1562 L-21.7891 -4.4062 L-20.6641 -4.4062 L-15.9922 2.75 L-15.9453 2.75 Q-15.9453 2.5938 -15.9922 1.7344 Q-16.0391 0.875 -16.0234 0.5 L-16.0234 -4.4062 L-15.0859 -4.4062 L-15.0859 4.1562 ZM-8.9297 4.1562 L-9.1328 3.2344 L-9.1797 3.2344 Q-9.6484 3.8438 -10.125 4.0625 Q-10.6016 4.2812 -11.3203 4.2812 Q-12.2734 4.2812 -12.8203 3.7812 Q-13.3672 3.2812 -13.3672 2.375 Q-13.3672 0.4375 -10.2578 0.3438 L-9.1641 0.3125 L-9.1641 -0.0938 Q-9.1641 -0.8438 -9.4844 -1.2031 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Q16.6797 2.7031 16.6797 2.0312 Q16.6797 1.5938 16.5 1.3047 Q16.3203 1.0156 15.9062 0.7734 Q15.4922 0.5312 14.6328 0.2344 Q13.4453 -0.1875 12.9297 -0.7734 Q12.4141 -1.3594 12.4141 -2.3125 Q12.4141 -3.2969 13.1562 -3.8828 Q13.8984 -4.4688 15.1328 -4.4688 Q16.3984 -4.4688 17.4766 -4 L17.1641 -3.1406 Q16.1016 -3.5781 15.1016 -3.5781 Q14.3047 -3.5781 13.8594 -3.2422 Q13.4141 -2.9062 13.4141 -2.2969 Q13.4141 -1.8594 13.5781 -1.5703 Q13.7422 -1.2812 14.1328 -1.0469 Q14.5234 -0.8125 15.3359 -0.5156 Q16.6797 -0.0469 17.1875 0.5078 Q17.6953 1.0625 17.6953 1.9375 Z"></path><path style="stroke:none;" d="M25.2109 4.2188 L24.2109 4.2188 L24.2109 0.1875 L19.6953 0.1875 L19.6953 4.2188 L18.6953 4.2188 L18.6953 -4.3438 L19.6953 -4.3438 L19.6953 -0.7031 L24.2109 -0.7031 L24.2109 -4.3438 L25.2109 -4.3438 L25.2109 4.2188 Z"></path></g></g></svg></svg></svg></svg></div></app-svg-box></div></app-multi-image><h3 _ngcontent-sc115="" class="name">CAS Name</h3><span _ngcontent-sc115="" class="casName">Sodium hydrosulfide</span><h3 _ngcontent-sc115="" class="molecularFormula">Molecular Formula</h3><span _ngcontent-sc115="" id="molform">HNaS</span> <button _ngcontent-sc115="" class="view-sfn-button">Discover more in SciFinder</button><div _ngcontent-sc115="" class="page-citation"><h3 _ngcontent-sc115="">Cite this Page</h3><span _ngcontent-sc115="" class="name">Sodium hydrosulfide</span>.   <em _ngcontent-sc115="">CAS Common Chemistry</em>.   CAS, a division of the American Chemical Society, n.d.   <span _ngcontent-sc115="" class="url">http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=16721-80-5</span> (retrieved <span _ngcontent-sc115="" class="timestamp">2024-11-27</span>) (CAS RN: <span _ngcontent-sc115="" class="casRn">16721-80-5</span>).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). </div></div></detail-summary></div><div _ngcontent-sc118="" class="col-lg-8 col-md-7 no-padding"><detail-ancillary _ngcontent-sc118="" _nghost-sc117=""><div _ngcontent-sc117="" class="detail-content-box detail-content-box-right"><h2 _ngcontent-sc117="" class="compoundPropertiesHeader">Compound Properties</h2><ul _ngcontent-sc117="" class="properties"><li _ngcontent-sc117=""><h3 _ngcontent-sc117="" class="property-name">Melting Point (1)</h3><span _ngcontent-sc117="" class="property-value">350 °C</span></li><li _ngcontent-sc117=""><h3 _ngcontent-sc117="" class="property-name">Density (1)</h3><span _ngcontent-sc117="" class="property-value">1.79 g/cm³</span></li></ul><h3 _ngcontent-sc117="">Source(s)</h3><ul _ngcontent-sc117="" class="sources"><li _ngcontent-sc117=""><span _ngcontent-sc117="">(1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)</span></li></ul></div></detail-ancillary><detail-info _ngcontent-sc118="" _nghost-sc116=""><div _ngcontent-sc116="" class="detail-content-box detail-content-box-right"><h2 _ngcontent-sc116="">Other Names and Identifiers</h2><h3 _ngcontent-sc116="" class="inchi">InChI</h3><p _ngcontent-sc116="" class="identifier">InChI=1S/Na.H2S/h;1H2/q+1;/p-1</p><h3 _ngcontent-sc116="" class="inchiKey">InChIKey</h3><p _ngcontent-sc116="" class="identifier">InChIKey=HYHCSLBZRBJJCH-UHFFFAOYSA-M</p><h3 _ngcontent-sc116="" class="smile">SMILES</h3><p _ngcontent-sc116="" class="identifier">[Na]S</p><h3 _ngcontent-sc116="" class="canonicalSmile">Canonical SMILES</h3><p _ngcontent-sc116="" class="identifier">[Na]S</p><h3 _ngcontent-sc116="" class="synonyms">Other Names for this Substance</h3><div _ngcontent-sc116="" class="detail-synonym-box"><ul _ngcontent-sc116=""><li _ngcontent-sc116="">Sodium sulfide (Na(SH))</li><li _ngcontent-sc116="">Sodium sulfide (Na(HS))</li><li _ngcontent-sc116="">Sodium bisulfide</li><li _ngcontent-sc116="">Sodium hydrosulfide</li><li _ngcontent-sc116="">Sodium hydrogen sulfide</li></ul></div><div _ngcontent-sc116="" class="synonyms-toggle"><p _ngcontent-sc116=""><a _ngcontent-sc116="">View All</a></p></div><h2 _ngcontent-sc116="" class="deletedOrReplacedRns">Deleted or Replaced CAS Registry Numbers</h2><p _ngcontent-sc116="">1310-76-5, 64568-18-9, 111883-06-8, 2267987-01-7</p></div></detail-info></div></div><div _ngcontent-sc118="" class="insight-teaser"><app-insight-teaser _ngcontent-sc118="" _nghost-sc107=""><div _ngcontent-sc107="" class="row teaser-header cas-blue">CAS INSIGHTS<sup _ngcontent-sc107="">TM</sup></div><div _ngcontent-sc107="" class="teaser-container"><div _ngcontent-sc107="" class="teaser text-black"><div _ngcontent-sc107="" class="teaser-img"><a _ngcontent-sc107="" target="_blank" class="insight-teaser-link" href="https://www.cas.org/resources/topic/emerging-science?utm_campaign=GLO_GEN_ANY_CIS_AWS&utm_medium=SYN_CAS_ORG&utm_source=CommonChemistry"><img _ngcontent-sc107="" src="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/673fab2932993c772c187705_1920x1080-webinar-replay-revised.jpg" alt="Hourglass and a clock"></a></div><a _ngcontent-sc107="" 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