Names | |
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IUPAC name
Cesium sulfide
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |
Cs2S | |
Molar mass | 297.876 g/mol |
Appearance | White crystal |
Density | 4.19 g·cm−3 [1] |
Melting point | 480 °C [2] |
Hydrolyzes to form caesium bisulfide [3] | |
Solubility in ethanol and glycerol | Soluble |
Structure | |
cubic, anti- fluorite | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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toxic |
GHS labelling: | |
Danger | |
H314, H400 | |
P260, P264, P273, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P391, P405, P501 | |
Related compounds | |
Other
anions
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Caesium oxide Caesium selenide Caesium telluride Caesium polonide |
Other
cations
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Lithium sulfide Sodium sulfide Potassium sulfide Rubidium sulfide Francium sulfide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Cesium sulfide is an inorganic salt with a chemical formula Cs2S. It is a strong alkali in aqueous solution. In the air, cesium sulfide emits rotten egg smelling hydrogen sulfide.
Similar to sodium sulfide, anhydrous cesium sulfide can be produced by reacting cesium and sulfur in THF. It needs ammonia or naphthalene to react. [4]
By dissolving hydrogen sulfide into cesium hydroxide solution, it will produce cesium bisulfide, then it will produce cesium sulfide too. [5] [6]。