Iron oxide red
Appearance:Powder
Color vs. standard:Similar
Tinting Strength:≥100±5%
Volatile Matter(105℃):≤1.0%
Water Soluble:≤0.5%
Moisture:≤1.0%
Residue On Sieve(325mesh):≤0.3%
PH Value:3.5-7
Oil absorption:15-25%
Content Fe2O3:≥95%
 Iron Oxide yellow
Appearance:Powder
Color vs. standard:Similar
Tinting Strength:95-100
Volatile Matter(105℃):≤1.0%
Water Soluble:≤0.5%
Moisture:≤1.0%
Residue On Sieve(325mesh):≤0.3%
PH Value:5-7
Oil absorption:25-35%
Content Fe3O4:≥85%

 Iron  Oxide Black
Appearance:Powder
Color vs. standard:Black
Tinting Strength:≥100±5%
Volatile Matter(105℃):≤1.0%
Water Soluble: ≤0.5
Moisture:≤1.0%
Residue On Sieve(325mesh):≤0.3%
PH Value:5-7
Oil absorption:15-25%
Content Fe3O4:≥95%