Densities and Viscosities of 1-Butyl-3-methylimidazolium Trifluoromethanesulfonate + H₂O Binary Mixtures at <i>T</i> = (303.15 to 343.15) K

Abstract

Densities and viscosities for the binary mixtures of H2O (1) + 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM][CF3SO3]) (2) were measured over the entire mole fraction range from (303.15 to 343.15) K at atmospheric pressure. Excess molar volumes and viscosity deviations as a function of mole fraction average were derived, and the results were fitted to the Redlich−Kister equation using a multiparametric nonlinear regression method. Estimated coefficients of the Redlich−Kister equation and standard error calculated from the Redlich−Kister equation to the experimental data are also presented. The results show that the densities and viscosities are dependent on water content and temperature.