Specifications: Features: 1) Properties: A) High plasticity B) Stick knot dispersing C) Insulating D) Agglomerating E) Flammable F) Refractive G) Sticking H) High weathering endurance I) Chemical stability 2) Size:325-5000um 3) Whiteness:70-95% Physical characteristics: 325(um) 1) Whiteness: >90 2) PH value:6 - 7 3) Moisture (%): <0.6 4) Refractive index:1.62 5) Residue of 325 mesh (%): <0.5 6) Oil absorption (g/100g):40 - 50 7) Specific gravity (g/cm3):2.72 8) Bulk density (kg/m3):260 600(um) 1) Whiteness: >92 - 95 2) PH value:6 - 7 3) Moisture (%): <0.5 4) Refractive index:1.62 5) Residue of 325 mesh (%): <0.05 6) Oil absorption (g/100g):75 - 80 7) Specific gravity (g/cm3):2.72 8) Bulk density (kg/m3):260 800(um) 1) Whiteness: >92 - 95 2) PH value:6 - 7 3) Moisture (%): <0.4 4) Refractive index:1.62 5) Residue of 325 mesh (%): <0.03 6) Oil absorption (g/100g):75 - 80 7) Specific gravity (g/cm3):2.72 8) Bulk density (kg/m3):260 1250(um) 1) Whiteness: >92 - 95 2) PH value:6 - 7 3) Moisture (%): <0.3 4) Refractive index:1.62 5) Residue of 325 mesh (%): <0.02 6) Oil absorption (g/100g):75 - 80 7) Specific gravity (g/cm3):2.72 8) Bulk density (kg/m3):260 2000(um) 1) Whiteness: >92 - 95 2) PH value:6 - 7 3) Moisture (%): <0.2 4) Refractive index:1.62 5) Residue of 325 mesh (%): <0.01 6) Oilabsorption (g/100g):75 - 80 7) Specific gravity (g/cm3):2.72 8) Bulk density (kg/m3):260 Chemical composition (%) 1) SiO2:52.55 2) Al2O3:45.07 3) Fe2O3:0.20~0.35 4) TiO2: <0.5 5) CaO:0.02 6) MgO:0.12~0.2 7) K2O:0.01 8) Na2O:0.00