1-Butyl-3-methyl-imidazolium-chloride, min. 99 %, Molar mass (M) 174,67 g/mol, Density (D) 1,086 g/cm³, Flash point (flp) 192 °C, CAS No. [79917-90-1], UN-Nr. 2811, Empirical formula C8H15ClN2