... soluble, no impurity 4.Large stock&fast delivery Application:It is used in metallurgy, medicine, leather, wood preservative, textile, ... ), (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It ... .13Element CompositionIf pure substance, nitrogen content is 21.21%, sulfer content is 24.26%.Density1.769g/cm3Decomposition temperature235 degrees ...