Chemistry:Iron(III) chromate

Iron(III) chromate

Names
IUPAC name iron(III) chromate
Identifiers
CAS Number	10294-52-7 Y
3D model (JSmol)	Interactive image
PubChem CID	21902690
UNII	O2123EJH4E N
InChI InChI=1S/3Cr.2Fe.12O/q;;;2*+3;;;;;;;6*-1 Key: OXLBLZDGMWMXSM-UHFFFAOYSA-N
SMILES [O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[Fe+3].[Fe+3]
Properties
Chemical formula	Fe2(CrO4)3
Molar mass	459.6808 g/mol
Appearance	yellow powder
Solubility in water	reacts, see also solubility chart
Hazards
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).
N verify (what is YN ?)
Infobox references

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

Discovery

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

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