Brown powder. Insoluble in water, alcohol, and ether, soluble in hot strong acids. High coloring and covering power. Good light and alkali resistance. No water permeability and oil permeability. Different colors follow different techniques, such as yellow brown, red brown, black brown, etc.

Content: ≥ 88 (%)
Oil absorption: 20-30 (g/100g)
Sieve residue: ≤ 0.3 (%)
Water soluble substance: ≤ 0.5 (%)
Moisture content: ≤ 1.5 (%)
PH value: 4-7
Density: 0.8-1.2 (g/cm ³)
Particle shape: Irregular shape
Color difference: ≤ 1.0
Coloring power: 95-105

Used for coloring coatings, buildings, rubber, plastics, etc.