Formula Fe2S3 Density 4.3 g/cm³ | Molar mass 207.9 g/mol Appearance yellow-green | |
 | ||
Correct formula iron iii sulfide 28
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.
Contents
This is a relatively unstable artificial product that does not occur in nature.
Sources
Fe2S3 is prepared by addition of refrigerated iron(III) chloride solution to also cooled sodium sulfide solution.
2 FeCl3 + 3 Na2S → Fe2S3↓ + 6 NaClIt is also produced as a side-product of desulfurization of fuel gasses. The gas is pumped through a container of hydrated iron(III) oxide, which combines with hydrogen sulfide.
Fe2O
3(s) + H
2O(l) + 3 H
2S(g) → Fe
2S
3(s) + 4 H
2O(l)
Reactions
Iron(III) sulfide decays at a temperature over 20°C into FeS and sulphur.
Fe2S3 → 2 FeS + S↓With hydrochloric acid it decays according to the following reaction equation:
Fe2S3 + 4 HCl → 2 FeCl2 + 2 H2S↑ + S↓References
Iron(III) sulfide Wikipedia(Text) CC BY-SA