Caesium sulfide

Caesium sulfide
Names
	IUPAC name Cesium sulfide
Identifiers
CAS Number	12214-16-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	22499401;
PubChem CID	14496896;
CompTox Dashboard (EPA)	DTXSID20561022 ;
	InChI InChI=1S/2Cs.S/q2*+1;-2 Key: QTNDMWXOEPGHBT-UHFFFAOYSA-N;
	SMILES [S-2].[Cs+].[Cs+];
Properties
Chemical formula	Cs2S
Molar mass	297.876 g/mol
Appearance	White crystal
Density	4.19 g·cm−3
Melting point	480 °C
Solubility in water	Hydrolyzes to form caesium bisulfide
Solubility in ethanol and glycerol	Soluble
Structure
Crystal structure	cubic, anti-fluorite
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H400
Precautionary statements	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	Caesium oxide; Caesium selenide; Caesium telluride; Caesium polonide
Other cations	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). Infobox references

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.