Grade : Silica Oxide Micro Fine -400 SiO2 Content (%): 99.5% Fe2O3 Content (%):0.03% AI2O3 Content (%): 0.2% MgO Content (%): 0.005% CaO Content (%): 0.01% P2O5 Content (%): 0.005% Purity: 3N M3000 / M4000 / M6000 Product name: Cristobalite silica flour manufacture Colour: pure white Size: 600 Mesh Item: Silicon Dioxide Powder Material: SiO2 Name: Christobalite silica flour Sand type: Powder Form