Vapor Pressures and Activity Coefficients of n-Alcohols and Benzene in Binary Mixtures with 1-Methyl-3-butylimidazolium Octyl Sulfate and 1-Methyl-3-octylimidazolium Tetrafluoroborate Safarov, J.; Verevkin, S.P.; Bich, E.; Heintz, A.; Journal of Chemical & Engineering Data 2006, 51, 518-525