dichromium iron tetraoxide Property

Density 

5.000

form 

black cubic crystals

color 

black cubic crystals, crystalline

Water Solubility 

insoluble H2O [CRC10]

Dielectric constant

4.0（Ambient）

InChI

InChI=1S/Cr.Fe.H2O/h;;1H2

InChIKey

WAORAWWPORSXOT-UHFFFAOYSA-N

SMILES

[Fe].[Cr].O

EPA Substance Registry System

Chromite (Cr2FeO4) (1308-31-2)

Safety

Hazardous Substances Data

1308-31-2(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H317May cause an allergic skin reaction

H332Harmful if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

dichromium iron tetraoxide Chemical Properties,Usage,Production

Chemical Properties

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

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

Uses

Only commercial source of chromium and its compounds.

Definition

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

Hazard

A confirmed carcinogen.

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 Profile

Confirmed human carcinogen during ore processing. Human mutation data reported. See also CHROMIUM COMPOUNDS and IRON.