... 93% Mesh: 600 Average grain: 16um It is widely used in paper-making,plastic, rubber,paint, building material,etc.our company ... ), % ≥97PH(10% Soliquit)8-10105°C Volatitle, % ≤0.3Insoluble substance in hydrochloric acid, % ≤1.0Moisture content, % ≤0.5Bulk density, g/cm3 ≤0 ...