Hydrochloric acid fuming ROTIPURAN®, 37 %, p.a., ISO, max. 0,005 ppm Hg, Molar mass (M) 36,46 g/mol, Density (D) 1,19 g/cm³, CAS No. [7647-01-0], UN-Nr. 1789, EG-Nr. 231-595-7, Empirical formula HCl