Antimony Trisulfide

Title: Antimony Trisulfide
CAS Registry Number: 1345-04-6
Additional Names: Antimonous sulfide; antimony sulfide; needle antimony; antimony glance
Molecular Formula: S3Sb2
Molecular Weight: 339.72
Percent Composition: S 28.32%, Sb 71.68%
Line Formula: Sb2S3
Literature References: Occurs in nature as the mineral stibnite. Prepn: Donges, Fricke, Z. Anorg. Chem. 253, 2 (1945); Gagliardi, Pilz, Z. Anal. Chem. 136, 344 (1952); Gmelins, Antimony (8th ed.) 18B, pp 503-524 (1949). Toxicity study: W. R. Bradley, W. G. Fredrick, Ind. Med. 10, Ind. Hyg. Sect. 2, 15 (1941).
Properties: Gray, lustrous, crystalline masses or grayish-black powder. Also exists in a red modification. mp 550°. Practically insol in water. Sol in concd HCl with evolution of H2S; sol in solutions of the fixed alkali hydroxides. LD i.p. in rats: 100.0 mg Sb/100 g (Bradley, Fredrick).
Melting point: mp 550°
Toxicity data: LD i.p. in rats: 100.0 mg Sb/100 g (Bradley, Fredrick)
Use: In pyrotechnics, Bengal fires; manuf ruby glass, matches, explosives; as a pigment in paints.
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