Formula: AlNH₄(SO₄)₂·12H₂O CAS: 7784-26-1 EC No.: 232-055-3 M (Molar Mass): 453.33 g/mol Appearance: Colorless crystals or white powder

Assay (Complexometric): ≥ 98.0%. Appearance: Colorless crystals or white powder. Identification: Passes test for aluminum, ammonium, and sulfate. Loss on Drying: 45.0-47.0% (water of crystallization). Residue on Ignition: 16.5-17.5% (as Al₂O₃). pH (5% solution): 3.0-4.0. Chloride (Cl): ≤ 0.005%. Heavy Metals (as Pb): ≤ 10 ppm. Iron (Fe): ≤ 0.002%. Alkalies and Alkaline Earths: ≤ 0.2%. Arsenic (As): ≤ 2 ppm. Water Insoluble Matter: ≤ 0.01%.