Product Index: Index name of the enterprise standard USP24 BP2003 Ammonium chloride NH4Cl% í¦ 99.0-101.0 99.0-101.0 99.5 Loss on drying% í_ 0.5 0.5 0.5 Residue on ignition% í_ 0.1 - 0.1 Iron salt content% í_ 0.002 0.002 0.005 Heavy metal (Pb)% í_ 0.001 0.001 0.001 Arsenic salt (As)% í_ - - 0.0005 Barium salts - - comply with the provisions of PH 4.6-6 4-6 4.6-6 Sulfate% í_ 0.015 0.015 0.015 Calcium% í_ 0.002 0.002 0.002 Potassium salt% í_ 0.02 0.002 0.02 Bromide% í_ 0.005 - 0.005. 25kg/bag