Product Code: 14860 HCl - M.W. 36.46 Assay (acidimetric) 35 - 37% Wt. per ml at 200 C about 1.18g Maximum Limits of Impurities : Non-volatile matter 0.01% Free chlorine (Cl) 0.0005% Sulphuric acid (H2SO4) 0.02% Iron (Fe) 0.0005% Lead (Pb) 0.0005% CAS No. : 7647- 01- 0 R : 34- 37 S : 26- 36/37/39- 45 HCl is a highly corrosive, strong acid, and can be a clear/colorless or light yellow liquid. It is used in the chemical industry mainly as a chemical reagent in the large-scale production of vinyl chloride for polyvinyl chloride plastic and methylene diphenyl diisocyanate/TDI for polyurethane.