... %:20.5 min 3,GB535-1995 4,prompt shipment Ammonium Sulphate(ammonia sulphate) General informationClass ,Fertilizer /inorganic salt ... 235 degrees centigrade CAS NO. ,7783-20-2 SpecificationAppearance :white crystal ,no visible mechanical impurityN content % : 20.5 MinWater content% ... it is for raw material in making oxydol,ammonium-alum and ammonium chlorde4.In welding industry,used for welding agent ...