Ammonium sulfate [(NH) SO] was one of the first and most widely used nitrogen (N) fertilizers for crop production. Its now less common but especially valuable where both N and sulfur (S) are required. Its high solubility provides versatility for a number of agricultural applications. APPLICATION Used as slow releasing nitrogenous fertilizer & reach source of Sulphur nutrient. Used as a raw material for various chemicals, dyes and pharmaceuticals. TECHNICAL PROPERTIES Moisture % by wt. Max.1.0 Ammoniacal Nitrogen percent by weight, min.20.5 Arsenic (as As2O3) % by wt. Max.0.01 Free acidity (as H2SO4) % by Wt. Max.0.025 Sulphate Sulphur (as S), % by Wt. Min.23