Aluminium Ammonium Sulphate Tech. (Alum Powder) is a white crystalline powder with a molecular weight of ~453 g/mol. It decomposes on heating (no fixed boiling point) and has a melting point around 93°C (with decomposition). Form: Solid / Powder; Uses: water treatment, textile processing, paper industry, dyeing, and other industrial applications. Available Quantities: 500 g, 5 kg, 25 kg (custom bulk packing available)