... %:20.5 min 3,GB535-1995 4,prompt shipment Ammonium Sulphate(ammonia sulphate) General informationClass ,Fertilizer /inorganic salt Molecular formula ,(NH4)2SO4Molecular weight , 132 ... ,235 degrees centigrade CAS NO. ,7783-20-2 SpecificationAppearance :white crystal ,no visible mechanical impurityN content % : 20.5 MinWater content% :0 ...