we are a professional manufacturer of ammonium chloride in china. we could supply ammonium chloride industry grade, ammonium chloride feed grade, ammonium chloride food grade and ammonium chloride medicine grade. If you are intersted in this,please don't hesitate to contact me. Thanks and best regards! cherry dong Tel and Fax:86-532-80795908 INDEX GB2946-92 RESULT AMMONIUM CHLORIDE % ≥ 99.5 99.5 MOISTURE % ≤ 0.7 0.18 RESIDUE ON IGNITION % ≤ 0.4 0.3 HEAVY METAL(Pb) % ≤ 0.0005 0.0003 SULPHATE % ≤ 0.02 0.02 Fe % ≤ 0.001 0.0003 Ph200g/L 25 4-5.8 5.1