1.Ammonium sulphate N=21% 2.ammonium sulpahte used as fertilizer, textile, leather,medicine 3.ammonium sulpahte :SGS/ISO9000 Ammonium SulphateMain active ingredients are 21% nitrogen and 24% sulfur, so it can bedescribed as NPK 21-0-0 24S. Generally, it is a by-product from chemical(cyanuric acid, capro, acrylonitrile, sodium cyanide, monosodium glutamate -MSG, methyl methacrylate - MMA, etc.) or ...