Antimony pentasulfide
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| Template:Longitem | Template:Chem2 |
| Molar mass | Template:Chem molar mass |
| Appearance | Red powder |
| Density | 4.12 g/cm 3 |
| Melting point | Template:Chembox CalcTemperatures |
| Solubility | soluble in HCl, alkalis, ammonium hydrosulfide |
| Template:Longitem | R05CA07 (WHO) |
| Flash point | Template:Chembox CalcTemperatures |
| Template:Longitem | Antimony(III) sulfide |
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Antimony pentasulfide is an inorganic compound of antimony and sulfur, also known as antimony red. It is a nonstoichiometric compound with a variable composition. Its structure is unknown.[2] Commercial samples are contaminated with sulfur, which may be removed by washing with carbon disulfide in a Soxhlet extractor.
Production
Antimony pentasulfide can be produced by the reaction of antimony with sulfur at a temperature from 250 to 400 °C in an inert atmosphere.
Uses
It may be used as a red pigment and is one possible precursor to Schlippe's salt, Template:Chem2, which can be prepared according to the equation:
It is also used in the vulcanization of rubber to produce red rubber.
Physical chemistry
Like many sulfides, this compound liberates hydrogen sulfide upon treatment with strong acids such as hydrochloric acid.[3]
Analysis by Mössbauer spectroscopy indicates that this compound is a derivative antimony(III),[4] explaining the production of antimony(III) chloride, rather than antimony(V) chloride, upon acidification. It is, therefore, not analogous to the phosphorus(V) compound phosphorus pentasulfide.
References
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Arnold F. Holleman, Nils Wiberg: Lehrbuch der Anorganischen Chemie, 102nd edition, de Gruyter, Berlin 2007, p. 849, Template:ISBN.
- ↑ Strem MSDS
- ↑ Script error: No such module "Citation/CS1".
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