ChemicalBook--->CAS DataBase List--->1308-31-2

1308-31-2

1308-31-2 Structure

1308-31-2 Structure
IdentificationBack Directory
[Name]

dichromium iron tetraoxide
[CAS]

1308-31-2
[Synonyms]

Chromite.
CHROMITEORE
FERROCHROMITE
iron chromate
iron chromite
CHROMITEOREROAST
CHROMITE(MINERAL)
Chromite (Cr2FeO4)
chromite processed
chromite homog mineral
chromite (mineral) (cr2feo4)
iron(II) chromium(III) tetraoxide
[EINECS(EC#)]

215-159-3
[Molecular Formula]

Cr2FeO4
[MOL File]

1308-31-2.mol
[Molecular Weight]

125.86
Chemical PropertiesBack Directory
[Definition]

A natural oxide of ferrous iron and chromium, sometimes with magnesium and aluminum present. Usually occurs in magnesium and iron-rich igneous rocks.
[Appearance]

Iron-black to brownish-black color, dark-brown streak, metallic to submetallic luster. Mohs hardness 5.5.
[density ]

5.000
[form ]

black cubic crystals
[color ]

black cubic crystals, crystalline
[Water Solubility ]

insoluble H2O [CRC10]
[Dielectric constant]

4.0(Ambient)
[Uses]

Only commercial source of chromium and its compounds.
[EPA Substance Registry System]

Chromite (Cr2FeO4) (1308-31-2)
Hazard InformationBack Directory
[Chemical Properties]

Iron-black to brownish-black color, dark-brown streak, metallic to submetallic luster. Mohs hardness 5.5.
[Hazard]

A confirmed carcinogen.
[Physical properties]

Habit: massive, granular, nuggets.
Color: black or brownish black.
Luster: metallic.
Diaphaneity: opaque.
Streak: brown.
Cleavage: none.
Twinning: {111}.
Fracture: uneven to conchoidal.
Others: weakly magnetic.
Thermal conductivity of 1.73–2 W.m–1K–1
[Industrial uses]

Only commercial source of chromium used in the metallurgical industry (85%) mainly as Fe–Cr for steelmaking, in the refractory and foundry market (8%) and in the chemical industry (7%).
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H332-H317-H302
[Precautionary statements ]

P261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P261-P271-P304+P340-P312-P264-P270-P301+P312-P330-P501
[Safety Profile]

Confirmed human carcinogen during ore processing. Human mutation data reported. See also CHROMIUM COMPOUNDS and IRON.
[Hazardous Substances Data]

1308-31-2(Hazardous Substances Data)
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