Supply Granular Ammonium Sulphate and Crystal Ammonium Sulphate from China with Good Prices Specification: Nitrogen: 20.5%min ,21%min Moisture: 1.0% max Sulfure: 24%min Free Acid: 0.03% min Application: 1. In agriculture , used for nitrogen fertilizer 2. Raw Material of making compound fertilizer 3. In chemical industry , it is for raw material in making oxydol , ammonium-alum and ammonium chloride 4.Used in production leather .