Kemira Dry Ferric Sulfate (KEMIRA FERIX) is a high purity granulated ferric sulfate product. The iron content is 19-21% as ferric iron. The product is soluble in water to a concentration of approx. 10% Fe-solution (approx. 36% Fe2(SO4)3). It is an effective primary coagulant that performs superbly in both drinking water and wastewater treatment applications over a wide pH-range.