Ammonium Chloride Feature:White crystal powder Specification: ItemsSpecificationNH4Cl Content (dry basis) %≥ 99.5Moisture≤ 0.5Residue after Ignition %≤ 0.4Iron Content (as Fe) %≤0.0005Heavy Metal (as Pb) %≤0.0005Sulphate Content (as SO4) %≤ 0.02PH Value (200g/L solution,temperature 25)4.0-5.8