Isothermal vapor-liquid equilibrium (VLE) data at T ) 333.15 K are reported for the four ternary systems dimethyl carbonate (DMC) + methanol + 1-ethyl-3-methylimidazolium ethyl sulfate (EMISE), DMC + methanol + 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF 4 ]), isopropanol + water + EMISE, and isopropanol + water + [Bmim][BF 4 ] by using headspace gas chromatography. The mole fraction of ionic liquids was varied from 0.05 to 0.2. The experimental binary VLE data were correlated using the Wilson, NRTL, and UNIQUAC equations. In addition, the excess volumes and deviations in molar refractivity data are reported at T ) 298.15 K for the sub-binary pairs of the above-mentioned ternary systems. These properties are correlated with the Redlich-Kister equation. Finally, the ternary excess volumes and deviations in molar refractivity data were calculated from the Radojkovic ˇequation using correlated binary Redlich-Kister parameters.

Liquid + liquid) equilibrium for (N,N-dimethylformamide (DMF) + n-hexadecane) at temperatures from (293.15 to 313.15) K and for ternary mixtures of (DMF + hexadecane) with either quinoline, or pyridine, or pyrrole, or aniline, or indole at T ) 298.15 K were determined at atmospheric pressure with stirred and thermoregulated cells. The NRTL and UNIQUAC models were used to correlate the experimental data. In addition, the extraction capability of DMF for heterocyclic nitrogen compounds was investigated with respect to distribution and selectivity.

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Isothermal vapor-liquid equilibrium (VLE) data at 333.15 K are measured for the binary systems {di-isopropyl ether (DIPE) + ethanol} and {DIPE + 2,2,4-trimethylpentane} and for the ternary system {DIPE + ethanol + 2,2,4-trimethylpentane} by using headspace gas chromatography. The experimental VLE data were correlated with the G E model: Margules, van Laar, Wilson, nonrandom two-liquid, and UNIQUAC equations. The excess molar volume and deviations in molar refractivity data are reported for the binary systems {DIPE + ethanol}, {DIPE + 2,2,4-trimethylpentane}, and {ethanol + 2,2,4-trimethylpentane} at 303.15 K. In addition, excess molar enthalpies for two binaries, {DIPE + ethanol} and {DIPE + 2,2,4-trimethylpentane}, at 303.15 K are also reported. These data were correlated with the Redlich-Kister equation. The excess molar volume and deviations in molar refractivity data are also reported for the ternary system {DIPE + ethanol + 2,2,4-trimethylpentane} at 303.15 K. The ternary data were correlated with the Cibulka equation. Also, the isocline of excess molar enthalpies for the same ternary system at 303.15 K was calculated using the Radojkovič equation.

The binary liquid−liquid equilibrium data for the system methyl tert-amyl ether + water from (288.15 to 313.15) K and the ternary liquid−liquid equilibria for the systems methyl tert-amyl ether + C1−C4 alcohols (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol) + water at 298.15 K were analytically determined at atmospheric pressure by the use of stirred and thermo-regulated cells. The experimental binary and ternary liquid−liquid equilibrium data were correlated with the NRTL and UNIQUAC activity coefficient models. Bachman−Brown, Hand, and Othmer−Tobias correlations were used to ascertain the reliability of the experimental data for each system. In addition, the distribution and selectivity of C1−C4 alcohols as solvents were analyzed.