... , medicine, leather, wood preservative, textile, plating, ferment, fertilizer. Standard (GB535-1995) IndexPremium GradeAppearancewhite crystal without any impurity ... The most common use is as a soil fertilizer. It contains 21% nitrogen as ammonium cations, and 24% sulfur as ... formula(NH4)2SO4Molecular weight132.13Element CompositionIf pure substance, nitrogen content is 21.21%, sulfer content is 24.26 ...