Al2O315.80%min Fe: 0.45%max pH: 3.0min Water Insolubles0.15%max. As: 0.0005%max; Pb: 0.002%max. Al2O3: 16.00%min Fe: 0.40%max pH: 3.0min Water Insolubles: 0.15%max As: 0.0005%max; Pb: 0.002%max Al2O3; 17% min; Fe: 0.30% max; pH: 3.0min Water Insolubles: 0.15% max Aluminium Sulphate Non Ferric Alumina: 17 % Iron: 0.01% Water insoluble: 0.5 % pH: 2.6 Size: Lumps/granules/Powder.