1 Whiteness: 90-95% 2 origin: Shanxi,China 3 AL2O3: 45+/-2% 4 SIO2: 52+/-2% 5 mesh size: 200/325/800/1250mesh specificationJTKA-01Whiteness (%)≥91Particle size(-10μm,%)≥97Residue on 325 mesh (%)≤0.006Oil absorption(g/100g)40-50PH6.0-8.0Water content (%)≤0.5Average particle size(μm)≤1.8Refractivity1.62Dispersion(μm)≤45specificationJTKA-02Whiteness (%)≥93.5Particle size(-10μm,%)78-84Residue on 325 ...