Ammonium Chloride Specifications: Purity 99.5 Min Moisture 0.7 Max Iron 0.001 Max Burning residue 0.4 Max Heavy residue (as Pb) 0.0005 Max Sulphate (as SO4) 0.02 Max PH 4.0-5.8 Application: It is mainly used for making dry-batteries, storage-batteries, ammonium salt, tan, electroplating, medicines, taking photographs, electrodes, bonding agent and compound fertilizer etc.