This paper reports on the synthesis and the physical properties of the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate (EMISE). Experimental densities, speeds of sound and refractive indices were determined from (288.15 to 343.15) K. Dynamic viscosities were measured from (298.15 to 343.15) K and surface tension were measured from (288.15 to 313.15) K for pure ionic liquid. Densities, dynamic viscosities, speeds of sound, and isentropic compressibilities have been determined over the whole composition range for ethanol (1) + EMISE (2) and water (1) + EMISE (2) binary systems at T ) (298.15, 313.15, and 328.15) K and atmospheric pressure. Excess molar volumes, viscosity deviations, and deviations in isentropic compressibility for the binary systems were fitted to a Redlich-Kister equation to determine the fitting parameters and the root mean square deviations. Refractive indices were measured at 298.15 K over the whole composition range for the ethanol (1) + EMISE (2) and water (1) + EMISE (2) binary systems. The results were used to calculate deviations in the refractive index.

Dynamic viscosities, densities, and refractive indices have been measured from T = 298.15 K to T = 343.15 K for 1-hexyl-3-methylimidazolium chloride, [C6mim][Cl], and 1-methyl-3-octylimidazolium chloride, [C8mim][Cl]. Dynamic viscosities and densities have been determined over the whole composition range for water + [C6mim][Cl] and water + [C8mim][Cl] at T = (298.15, 313.15, 328.15, and 343.15) K and 0.1 MPa of pressure. Excess molar volumes and viscosity deviations for the binary systems at the above-mentioned temperatures were fitted to a Redlich−Kister equation to determine the fitting parameters and the root mean square deviations. Densities and viscosities of water + 1-butyl-3-methylimidazolium chloride, [C4mim][Cl], at T = (298.15, 313.15, 328.15, and 343.15) K and 0.1 MPa of pressure have been measured, and apparent molar volumes were determined.

No abstract

In this contribution, dynamic viscosities, densities, and speeds of sound of 1-ethyl-3-methylimidazolium ethyl sulfate (EMISE) with methanol, 1-propanol, and 2-propanol at T ) (298.15, 313.15, and 328.15) K and refractive indices at T ) 298.15 K and at atmospheric pressure have been measured over the whole composition range. Excess molar volumes, excess molar isentropic compressions, and viscosity deviations for the binary systems from T ) 298.15 K to T ) 328.15 K and refractive deviations at 298.15 K have been calculated and were satisfactorily fitted to a Redlich-Kister equation to give the fitting parameters and the root-mean-square deviations.

In this work, experimental data of isobaric vapor-liquid equilibria for the ternary system ethanol + water + 1-butyl-3-methylimidazolium chloride ([C 4 mim][Cl]) and for the corresponding binary systems containing the ionic liquid (ethanol + [C 4 mim][Cl] and water + [C 4 mim][Cl]) were measured at 101.3 kPa. Vapor-liquid equilibria experimental data of binary and ternary systems were correlated by the NRTL equation. NRTL parameters have been used to predict the evolution of the ethanol-water azeotrope composition with different amounts of ionic liquid.