Ammonium Sulphate 1, Reputed manufacturer 2,Content of Nitrogen %:20.5 min 3,GB535-1995 4,prompt shipment Ammonium Sulphate(ammonia sulphate) General informationClass ,Fertilizer /inorganic salt Molecular formula ... temperature ,235 degrees centigrade CAS NO. ,7783-20-2 SpecificationAppearance :white crystal ,no visible mechanical impurityN content % : 20.5 MinWater content% :0.2 MaxFree acid (h2so4 ...