Iron oxide black Chemical Properties

Melting point:

1538 °C(lit.)

Density 

4.8-5.1 g/mL at 25 °C(lit.)

form 

powder

Specific Gravity

1.19

Specific Gravity

0.89

EPA Substance Registry System

Magnetite (Fe3O4) (1309-38-2)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

WGK Germany 

-

TSCA 

Yes

MSDS

• Language:EnglishProvider:SigmaAldrich
• Language:EnglishProvider:ALFA

Iron oxide black Usage And Synthesis

Chemical Properties

Black mineral, black streak, submetallic or dull to metallic luster. Contains 72.4% iron. Readily recognized by strong attraction by magnet. Soluble in powder form in hydrochloric acid. Decomposes at 1538C to ferric oxide Fe2O3.

Uses

Black iron oxide (Fe3O4) is a synthetic inorganic pigment, produced by oxidation of iron (II) hydroxide obtained from the action of alkali on iron (II) sulfate solution. The composition of the pigment corresponds with that of magnetite. The pigment is of fine texture, but has only low tinting strength in paint and other coatings. It is mainly used as a colorant in fillers, primers, and undercoats. The major black pigments in the paint industry are carbon blacks.

Uses

Diagnostic aid, magnetic resonance imaging (MRI); treatment of iron deficiency.

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