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Caesium sulfide

Chemical compound From Wikipedia, the free encyclopedia

Caesium sulfide
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Caesium sulfide is an inorganic salt with a chemical formula Cs2S. It is a strong alkali in aqueous solution. In the air, caesium sulfide emits rotten egg smelling hydrogen sulfide.

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Production

Similar to sodium sulfide, anhydrous caesium sulfide can be produced by reacting caesium and sulfur in THF. It needs ammonia or naphthalene to react.[4]

2 Cs + S → Cs2S

By dissolving hydrogen sulfide into caesium hydroxide solution, it will produce caesium bisulfide, then it will produce caesium sulfide too.[5][6]

CsOH + H2S → CsHS + H2O
CsHS + CsOH → Cs2S + H2O

References

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