Iron Oxide Black 318

*Fe2O3 or Fe3O4 (%):≥90
*Oil absorption (ml/100g):15-25
*Res.on325 mesh (%):≤0.5
*Water sol.Salts (%):≤0.5
*Moisture:≤1.5
*PH value:5-8
*Tamped apparent density (g/cm3):0.9-1.3
*Particle shape:spherical
*Compared with std.:≤1
*Tinting strength:95-105