... Item Powder Al2O3,%, min 15.8-17 Fe, % max 0.5-0.005 PH, % min 3 3 Water Insolubles,%max0.15 Aluminium Sulphate Aluminium sulphate ... sulphate, granular Aluminium sulphate, Powder Molecular formula: [Al2(SO4)3·18H2O]Properties:White crystalline, easily soluble in water, not soluble ... , % ≤0.50.70.5-0.0050.0050.5PH, % ≥33333Water Insolubles,%≤0.150.150.150.30.15As,%≤-0.0005-0.0005-Pb,%≤-0.002-0.002-Grain ...