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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.

Production

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]

2 Cs + S → Cs₂S

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

CsOH + H₂S → CsHS + H₂O

CsHS + CsOH → Cs₂S + H₂O

References

^ Sommer, Helmut; Hoppe, Rudolf. The crystal structure of cesium sulfide and a remark about cesium selenide, cesium telluride, rubidium selenide, and rubidium telluride (in German). Zeitschrift für Anorganische und Allgemeine Chemie, 1977. 429: 118-30. ISSN 0044-2313
^ Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 336 ([1], p. 336, at Google Books).
^ Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN 978-3-5406-0035-0, S. 692 ([2], p. 692, at Google Books).
^ J.-H. So and P. Boudjouk (1992). N. G. Russell (ed.). "Hexamethyldisilathiane". Inorganic Syntheses. 29: 30–32. doi:10.1002/9780470132609.ch11. ISBN 978-0-470-13260-9.
^ Biltz, Wilhelm; Wilke-Dörfurt, Ernst (1905). "Über Sulfide des Rubidiums und Cäsiums". Zeitschrift für Anorganische Chemie. 48: 297–318. doi:10.1002/zaac.19060480122.
^ R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext

[1] Sommer, Helmut; Hoppe, Rudolf. The crystal structure of cesium sulfide and a remark about cesium selenide, cesium telluride, rubidium selenide, and rubidium telluride (in German). Zeitschrift für Anorganische und Allgemeine Chemie, 1977. 429: 118-30. ISSN 0044-2313

[Perry-2] Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 336 ([1], p. 336, at Google Books).

[Lax-3] Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN 978-3-5406-0035-0, S. 692 ([2], p. 692, at Google Books).

[4] J.-H. So and P. Boudjouk (1992). N. G. Russell (ed.). "Hexamethyldisilathiane". Inorganic Syntheses. 29: 30–32. doi:10.1002/9780470132609.ch11. ISBN 978-0-470-13260-9.

[Blitz-5] Biltz, Wilhelm; Wilke-Dörfurt, Ernst (1905). "Über Sulfide des Rubidiums und Cäsiums". Zeitschrift für Anorganische Chemie. 48: 297–318. doi:10.1002/zaac.19060480122.

[Abegg-6] R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext

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