Silicon Dioxide (SiO2) > 99.3-99.5% Iron Trioxide Fe2O3 â?¤ 0.020% {200 ppm} Aluminum (AI2O3) â?¤ 0.5% Calcium/Magnesium Oxide (CaO/Mao) â?¤ 0.5% Sodium Chloride (NaCI) â?¤ 500 ppm Titanium Dioxide (TIO2) â?¤ 0.05% Chromium Oxide â?¤ 5 ppm Moisture Less 5% on site (Before Loading to OV)