... accords with national standard: (GB2946-92) border=0>5) Usage: used in cell, oil refining, electroplate, ... film bagSpecification: First--class product Ammonium chloride(NH4CL) ≥ 99.5% Residue after Ignition % ≤ 0.40% ( Fe )content ... /l liquor, 25 Degree C): 4.0-5.8 Moisture ≤ 0.5% Sulphate Content (as SO4) % ≤ 0.02% ... 200g/l liquor, 25 degree C): 4.0-5.8 Moisture ≤ 0.5% Sulphate Content (as SO4) % ≤ 0.02% ...