Specification :

¡¡It includes two types:pellet or lump. It can dissolve in hydrofluoric acid and strong caustic alkali solution,not dissolve in water and any other solvent acid. Pore diamenter:20-30A .Specific surface area 650-800©O/g
Pore volume:0.35-0.45ml/.Specific heat:0.92kJ/kg. ¡æ

Widely used for drying and maistureproof,such as air oxygen hydrogen and other gas,may also be used as catalyst carries,adorbents,seperaes,etc.