1-Methyl-3-ethylimidazolium 1-Methyl-3-ethylimidazolium chloride 1-Methyl-3-ethylimidazolium tetrachloroaluminate 1H-Imidazolium, 1-ethyl-3-methyl- 65039-03-4 Meetimcl Meetimcl-alcl3