Aluminum sulfate is a chemical compound with the chemical formula Al ₂(SO₄)₃ , soluble in water. major use of aluminum sulfate is as a coagulant in drinking water treatment. Aluminum sulfate commonly referred to as a type of alum. Eurasia holding company is able to provide aluminum sulfate with 16.5-17.5% Alum and purity above 98%, crystalline at any desired amount.