Iron(III) sulfide
From Infogalactic: the planetary knowledge core
| Names | |
|---|---|
| IUPAC name
Iron(III) sulfide
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| Other names
Iron sesquisulfide
Ferric sulfide |
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| Identifiers | |
12063-27-3  |
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| ChEBI | CHEBI:75899  |
| PubChem | 160957 |
| Properties | |
| Fe2S3 | |
| Molar mass | 207.90 g/mol [1] |
| Appearance | yellow-green [1] |
| Density | 4.3 g/cm3 [1] |
| Melting point | decomposition [1] |
| very slightly soluble [1] | |
| Vapor pressure | {{{value}}} |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 verify (what is ?) |
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| Infobox references | |
Iron(III) sulfide, also known as ferric sulfide or sesquisulfide, is one of the three iron sulfides besides FeS and FeS2. It is a solid, black powder but decays at ambient temperature into a yellow-green powder.
This is a relatively unstable artificial product that does not occur in nature.
Preparation and properties
Fe2S3 is prepared by addition of refrigerated iron(III) chloride solution to also cooled sodium sulfide solution.
- 2 FeCl3 + 3 Na2S → Fe2S3↓ + 6 NaCl
which decays at a temperature over 20°C into FeS and sulphur.[2]
- Fe2S3 → 2 FeS + S↓
With hydrochloric acid it decays according to the following reaction equation:[3]
- Fe2S3 + 4 HCl → 2 FeCl2 + 2 H2S↑ + S↓
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Charles D. Hodgman, Handbook of Chemistry and Physics (1961), p.590
- ↑ Holleman, Wiberg: Inorganic Chemistry (2001), p. 1451; ISBN 0-12-352651-5
- ↑ H. Roempp, Chemie (1997), S. 1099; ISBN 3-13-734710-6
