Iron(II) chromite

Iron(II) chromite

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Names
IUPAC name Iron(2+) chromite
Identifiers
CAS Number	1308-31-2
EC Number	215-159-3
Jmol 3D model	Interactive image
PubChem	166600
RTECS number	GB4000000
InChI InChI=1S/Cr.Fe.3O/q2*+3;3*-2 Key: HEQBUZNAOJCRSL-UHFFFAOYSA-N
SMILES [O-2].[O-2].[O-2].[Cr+3].[Fe+3]
Properties
Chemical formula	FeCr2O4
Molar mass	223.83 g/mol
Appearance	brown-black solid
Density	4.97 g/cm3
Melting point	2,190 to 2,270 °C (3,970 to 4,120 °F; 2,460 to 2,540 K)
Solubility in water	insoluble
Solubility	slightly soluble in acid
Refractive index (nD)	2.16
Structure
Crystal structure	cubic
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Iron(II) chromite is an inorganic compound with the chemical formula FeCr₂O₄.

Preparation

It is created by the sintering of chromium(III) oxide and iron(II) oxide at 1600 °C. It also occurs in nature as the mineral chromite, though with many impurities.

Uses

It is used as a commercial source of chromium and its compounds. It is also used as a catalyst in the synthesis of dihydrogen from the reaction between carbon monoxide and water vapour

Safety

It dust particles may cause irritation. Avoid inhalation and/ or ingestion of dusts. Swallowing larger amounts may cause injury.