... gradePackage:40kg/25kg bagsApplication: It is mainly used for making dry-batteries,storagebatteries,ammonium salt, tan, electroplating, medicines,taking photographs,electrodes,bonding ... etc.Specifications: 1) Powder grade: (GB2946-92)2) NH4Cl (as dry basis): 99.5% min3) Heavy metal (as Pb): 0.0005 ...