SPECIFICATION OF SILICA SAND - Grade Name - Silica Sand A2 Visual Appearance - White/Tan White Granules Moisture - 1% max Specific Gravity - 2.20 Mohs Hardness - 6 to 7% Application - Glass Industries, Foundry & Casting, Ceramic Wool, Gray & White Cement CHEMICAL ANALYSIS - LOI - 0.50% SiO2 - 99%±0.5% Al2O3 - 0.60% TiO2 - 0.05% Fe2O3 - 0.04%±0.01% CaO - 0.05% MgO - 0.08% Na2O - 1.40% K2O - 0.58%