Aluminium Sulphate Powder - Al2(SO4)3

CAS Number - 10043-01-3; 7784-31-8 (octadecahydrate)

EC Number - 233-135-0

Molar mass - 342.15 g/mol (anhydrous); 666.44 g/mol (octadecahydrate)

Density - 2.672 g/cm3 (anhydrous); 1.62 g/cm3 (octadecahydrate)

Melting point -  770 °C (1,420 °F; 1,040 K) (decomposes, anhydrous); 86.5 °C (octadecahydrate)