Chemical classification Chemical Name Ammonium Chloride Chemical Formula NH4Cl Molecular weight 53.453 Concentration 99.5% CAS.NO. 12125-02-9 Properties / Specification Physical State Solid Appearance White Crystals Moisture 0.7% Max Iron 0.001%Max Heavy metal (As Pb) 0.0005%Max Sulthates 0.02%Max Burnt LEFT 0.4%Max PH value 4.0-5.8.