MS75 Description This grade of micronized silica flour is manufactured from super fine silica sand having a SiO 2 content of up to 99%. Recommended Applications Ceramics, where it is ideal for the glazing processes. Filler material used in paints, Polymers, Concrete bricks and Mortar. Typical Properties   Bulk Density 0.9g/cm³ Oil Absorption 25g/100g PH 7 Hardness 7 Moh's Minimum brightness 90 Chemical Composition   SiO 2 99 ± 0.5% Fe 2 O 3 0.025-0.04% Al 2 O 3 0.50-1.00% TiO 2 0.04-0.09% Particle Distribution Min. 98.5% passing 75 Microns.