Iron(III) chromate

Iron(III) chromate is the iron(III) salt of chromic acid with the chemical formula Fe2(CrO4)3.

Iron(III) chromate[1]
Names
IUPAC name
iron(III) chromate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.030.588
UNII
  • InChI=1S/3Cr.2Fe.12O/q;;;2*+3;;;;;;;6*-1
    Key: OXLBLZDGMWMXSM-UHFFFAOYSA-N
  • [O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[Fe+3].[Fe+3]
Properties
Fe2(CrO4)3
Molar mass 459.6808 g/mol
Appearance yellow powder
reacts, see also solubility chart
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 highly toxic (contain Cr(VI))
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Discovery

Iron(III) chromate was discovered by Samuel Hibbert-Ware in 1817 while visiting Shetland.[2]

Production

It may be formed by the reaction of potassium chromate and iron(III) nitrate. This reaction forms iron(III) chromate and potassium nitrate. It also can be formed by the oxidation by air of iron and chromium oxides in a basic environment:

4 Fe2O3 + 6 Cr2O3 + 9 O2 → 4 Fe2(CrO4)3

References
  1. Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–63. ISBN 0-8493-0594-2.
  2. "Search - Archives Hub".


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