Ammonium alum 99.5% CAS No:7784-25-0 Usage:Used in water purification/Food industry Manufacture as required.lumps or powde 1. SpecificationMolecular formula, NH4K(SO4)2.12H2O Molecular weight, 237.1452 CAS No., 7784-25-0 EINECS NO., 233-055-3 Appearance: White crystalline double sulphate of aluminium.Colorless, transparent, massive or crystalline powder, odorless non-toxic, taste sweetened and ...