Molecular formula: nh4cl N.W. : 53.49 Appearance: colorless crystal or white crystal powder Properties: it dissolves in water easily, in glycerin and little solve in alcohol, not solve in acetone and aether. Specification: Item Usp24 Bp2003 Enterprise standard Ammonium chloride(nh4cl) % í² 99.0-101.0 99.0-101.0 99.9 Loss on drying %ín 0.5 0.5 0.1 Residue on ignition% ín 0.1 - 0.1 Fe %ín - 0.002 0.003 Heavy metal (pb)% ín 0.001 0.001 0.001 As % ín - - 0.0005 Barium - - Confirm Ph 4.6-6 - 4.6-6 Slufate (so4 ) %ín - 0.015 0.015 Calcium(ca) % ín - 0.002 0.002 Potassium (k) %ín - 0.02 0.02 Bromide %ín - - 0.005 Sulfate ash %ín - 0.1% 0.1% Packing: 25kg woven bag or 25kg paper drum