White crystal powder Application:medicine, cosmetics, paint,paper etc. ZrO2+HfO2(min):40% ZrO2+HfO2(min) 40% 40% SiO2(max) 0.01% 0.01% Fe2O3(max) 0.0015% 0.0015% Na2O(max) 0.15% 0.01% TiO2(max) 0.001% 0.001% Al2O3(max) 0.0003% 0.0003% Cl- 0.02% Package 25kg/drum or 1000kg/bag