CRYOLITE 500 gmSodium Hexafluoroaluminate 10 x 500 gmNa3AlF6 M.W. 209.94Minimum assay 98.5%Maximum Limits of Impurities :Loss on drying (105°C) 0.2%Iron (Fe) 0.05%Silicic acid (SiO2) 0.02%CAS No. 15096-52-3 Un No. 6.1/3288 TARIFF : 2826 30 00R : 20/22-48/23/25 S : 22-37-45 F : 15