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Brown 4660
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  • Brown 4660

Brown 4660

Chemical formula: Synthetic iron oxide Fe2O3/Fe3O4

Type: Brown iron oxide pigment

Colour index: Pigment red 101 (77491) / Pigment black 11 (77499)

CAS NO.: 1309-37-1 / 12227-89-3

Form: Powder

Hue: Middle brown

Typical Properties

Property Typical value
Fe2O3/Fe3O4 content (%) 60 - 90
Moisture (%) max 1.0
Water soluble salts (%) max 0.5
Sieve residue on 45 μm mesh (%) max 0.5
pH value 4.0-8.0
Oil absorption 20-30
Density (g/cm3) approx. 5.0
Apparent density (g/cm3) approx. 0.8
Particle shade irregular
Average particle size (μm) approx. 0.5

Applications:

Coating

Paint

Concrete and masonry