Email & MSN : yuyuehong88@hotmail.com Iron Oxide Black Type: 722//8604//8603//8602 Fe3O4: ≥95//≥90//≥95//≥93 Oil absorption (%): 15-25 Residue on bolted (%): ≤0.4 Water soluble: ≤2.0 Moisture (%): ≤1.0 PH-value: 5-7 Density: 0.9-1.2 Particle Shape: spherical Color difference vs standard: ≤1 Tinting strength (%): 95-105 Description: Character: 1. Black powder, strong tinting and covering 2. Lightness alkali resistant, only dissolved in heat strong acid Application: 1.Industry coating,strong antirust 2. Pigment of watercolour and grease-paint 3. Tinting of the scagliola and concrete floor 4. material of the magnetic steel in telecommnication