Iron(III) chromate
{{Chembox
| Verifiedfields = changed
| verifiedrevid = 414434912
{{cite book | last = Lide | first = David R. | year = 1998
| title = Handbook of Chemistry and Physics
| edition = 87 | volume =
| location = Boca Raton, Florida
| publisher = CRC Press
| isbn = 0-8493-0594-2 | pages = 4–63}}
| IUPACName = iron(III) chromate
| OtherNames =
|Section1={{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 10294-52-7
| ChemSpiderID = 10653099
| EC_number = 233-661-0
| UNII_Ref = {{fdacite|changed|FDA}}
| UNII = O2123EJH4E
| PubChem = 21902690
| InChI = 1S/3Cr.2Fe.12O/q;;;2*+3;;;;;;;6*-1
| InChIKey = OXLBLZDGMWMXSM-UHFFFAOYSA-N
| SMILES = [O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[O-][Cr](=O)(=O)[O-].[Fe+3].[Fe+3]}}
|Section2={{Chembox Properties
| Formula = Fe2(CrO4)3
| MolarMass = 459.6808 g/mol
| Appearance = yellow powder
| Solubility = reacts, see also solubility chart}}
|Section3={{Chembox Hazards
| MainHazards = toxic (contain Cr(VI))}}
|Section4={{Chembox Thermochemistry}}}}
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.{{Cite web|url=http://archives.li.man.ac.uk/ead/search?operation=summary&rsid=998&firstrec=1&numreq=20&highlight=1&hitposition=0|title = Search - Archives Hub}}(full citation required)
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
{{Reflist}}
{{Iron compounds}}
{{Chromates and dichromates}}
{{DEFAULTSORT:Iron(Iii) Chromate}}
{{inorganic-compound-stub}}