Iron (III) sulfide

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General
Surname Iron (III) sulfide
other names
  • Diiron trisulfide
  • Ferric sulfide
Molecular formula Fe 2 S 3
Brief description

yellowish gray substance; metastable

External identifiers / databases
CAS number 12063-27-3 cubic
PubChem 160957
Wikidata Q420355
properties
Molar mass 207.89 g mol −1
Physical state

firmly

density

4.246 g cm −3

solubility
  • almost insoluble in water
  • soluble in HCl with evolution of H 2 S
safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Iron (III) sulfide Fe 2 S 3 is a solid, black substance which, however, breaks down into a yellowish-gray powder mixture of iron (II) sulfide and sulfur at room temperature .

Appearance and properties

If a likewise cooled aqueous solution of sodium sulfide is added to an ice-cooled aqueous solution of iron (III) chloride , a black precipitate of iron (III) sulfide is formed

which, however, breaks down into FeS and sulfur above 20 ° C

With hydrochloric acid , decomposition takes place according to the following reaction equation:

The compound has a crystal structure of spinel .

Individual evidence

  1. a b c d e f D'Ans-Lax: Taschenbuch für Chemiker und Physiker , Volume 3 (1998), p. 458; ISBN 3-540-60035-3
  2. Brockhaus ABC Chemie, FA Brockhausverlag Leipzig 1971, p. 330.
  3. This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  4. ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1657.
  5. H. Römpp, Chemie (1997), p. 1099; ISBN 3-13-734710-6
  6. S. Yamaguchi, H. Wada: Fe2S3 of the spinel type structure with lattice defect. In: Crystal and Technology. 8, 1973, p. 1017, doi : 10.1002 / crat.19730080905 .