1-Ethyl-3-methylimidazolium tetrafluoroborate143314-16-333 % similar 1-Butyl-3-methylimidazolium hexafluorophosphate174501-64-533 % similar Dibutylamine tetrafluoroborate(1-)12107-76-533 % similar Tetrabutylammonium tetrafluoroborate429-42-533 % similar 1-Butyl-3-methylimidazolium iodide65039-05-632 % similar 1-Butyl-3-methylimidazolium chloride79917-90-132 % similar 1-Butyl-3-methylimidazolium bromide85100-77-232 % similar 1-(2-Hydroxyethyl)-3-methylimidazolium tetrafluoroborate374564-83-731 % similar