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Reference.org
Barium sulfide
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<p>Barium sulfide is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula <a href="/facts/Barium/IkL09XHQ">Ba</a><a href="/facts/Sulfide/d8YMjLeu">S</a>. BaS is the barium compound produced on the largest scale. It is an important precursor to other barium compounds including <a href="/facts/Barium_carbonate/IGjS0E0G">barium carbonate</a> and the pigment <a href="/facts/Lithopone/2qw0of1H">lithopone</a>, ZnS/BaSO4. Like other <a href="/facts/Chalcogenide/GTXXbDoV">chalcogenides</a> of the alkaline earth metals, BaS is a short <a href="/facts/Wavelength/kcJU0ymz">wavelength</a> emitter for <a href="/facts/Electronic_display/fA0mUcIQ">electronic displays</a>. It is colorless, although like many sulfides, it is commonly obtained in impure colored forms. </p>