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Iron(III) chromate

Names
IUPAC name iron(III) chromate
Identifiers
CAS Number	10294-52-7
3D model (JSmol)	Interactive image
ChemSpider	10653099
ECHA InfoCard	100.030.588
EC Number	233-661-0
PubChem CID	21902690
UNII	O2123EJH4E
CompTox Dashboard (EPA)	DTXSID101045361
InChI InChI=1S/3Cr.2Fe.12O/q;;;2*+3;;;;;;;6*-1Key: OXLBLZDGMWMXSM-UHFFFAOYSA-N
SMILES (=O)(=O).(=O)(=O).(=O)(=O)..
Properties
Chemical formula	Fe2(CrO4)3
Molar mass	459.6808 g/mol
Appearance	yellow powder
Solubility in water	reacts, see also solubility chart
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	toxic (contain Cr(VI))
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is  ?) 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 salt metathesis reaction of potassium chromate and iron(III) nitrate, which gives potassium nitrate as byproduct.

2 Fe(NO₃)₃ + 3 K₂CrO₄ → Fe₂(CrO₄)3 + 6 KNO₃

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".(full citation required)

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