... 3.18H2OApperance: White or grayish flakes, soluble in water.Specification: ItemIndexAl2O3 content/%1Type2Type3Type15.8015.8017.00Analysis:Fe2O3 ... 1% water solution) /% 3.03.03.0Use: used for the manufacturing of wood –pulp,paper,alum,aluminium salt ... fats and oils,tanning white leather,and water purification as deodorization and decolourizer in petroleum ... of 50kg net each. aluminum sulphate 17