Silicon dioxide: High efficient dispersion, good anti-settling Excellent matting ability, ... , very fine, many hole secondary particle, hydrophile,adsorption, silutedness. Etc. Silicon rubber, coatings, paper making, pesticide. be used for glass, ceramic ... .0-7.5 DBP absorption value cm3/g 1.8~2.5 Sulfate content % ≤1.6 Granularity (D50 μm 180~220 ...