Product name : ammonium chloride medical grade Intro: 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) % 99.0-101.0 99.0-101.0 99.9 Loss on drying % 0.5 0.5 0.1 Residue on ignition% 0.1 - 0.1 Fe % - 0.002 0.003 Heavy metal (pb)% 0.001 0.001 0.001 As % - - 0.0005 Barium - - Confirm Ph 4.6-6 - 4.6-6 Slufate (so4 ) % - 0.015 0.015 Calcium(ca) % - 0.002 0.002 Potassium (k) % - 0.02 0.02 Bromide % - - 0.005 Sulfate ash % - 0.1% 0.1% Packing: 25kg woven bag or 25kg paper drum