697. Antimony Pentasulfide

Nomenclature

CAS number: 1315-04-4
Antimony sulfide (Sb2S5); golden antimony sulfide; antimonic sulfide; antimonial saffron; antimony red.
S5Sb2; mol wt 403.85.
S 39.70%, Sb 60.30%.
Sb2S5.

Description and references

Prepn: Gmelins, Antimony (8th ed.) 18B, pp 534-539 (1949). Existence of Sb5+ sulfide doubted: Birchall, Della Valle, Chem. Commun. 1970, 675. Toxicity study: W. R. Bradley, W. G. Fredrick, Ind. Med. 10; Ind. Hyg. Sect. 2, 15 (1941).

Properties

Orange-yellow, odorless powder. Insol in water. Sol in concd HCl with evolution of H2S; sol in solns of alkali hydroxides or sulfides, forming sulfantimoniates. Incompat. Acids, metal salts. LD50 i.p. in rats: 150.0 mg Sb/100 g (Bradley, Fredrick).

Use

As pigment; vulcanizing and coloring rubber; manuf matches and fireworks.