... uses: metallurgy, medicine, leather, wood preservative,plating, fertilizer Ammonium sulfate is an inorganic salt with a number of commercial ... the Center for Disease Control.Ammonium sulfate is also a food additive.A saturated solution of ammonium sulfate in heavy water ( ... been used in flame retardant compositions acting much like diammonium phosphate. As a flame retardant, it lowers the combustion ...