Rp. Swatloski et al., Solvation of 1-butyl-3-methylimidazolium hexafluorophosphate in aqueous ethanol - a green solution for dissolving 'hydrophobic' ionic liquids, CHEM COMMUN, (20), 2001, pp. 2070-2071
The relatively hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexaflu
orophosphate has been found to be totally miscible with aqueous ethanol bet
ween 0.5 and 0.9 mol fraction ethanol, whereas the ionic liquid is only par
tially miscible with either pure water or absolute ethanol; the ability to
dissolve 1-butyl-3-methylimidazolium hexafluorophosphate in a 'green' aqueo
us solvent system has important implications for cleaning, purification, an
d separations using ionic liquids.