... Al2 (SO4)3 15.8%,16%,17% 1) Technical Index Aluminium Sulphate 17% ITEMSPECIFICATIONRESULTAluminum oxide Al2O3 %,min17.0017.15Iron (Fe) content ... Formula: AL2(SO4)3Appearance:White powder/flakes /crystal Property:Iron-free aluminum sulfate is a white crystal, the specific gravity ... for industrial use. Packing: PP/PE 50kg/bag 3--Low iron aluminium sulphate Specification: Al2O3, 15.9%min, Fe: 0.007%max, ...