Liquid−Liquid Equilibrium and Physical Properties of the Ternary Mixture (Dimethyl Carbonate + Methanol + Cyclohexane) at 298.15 K

Abstract

Density, refractive index, and speed of sound of dimethyl carbonate (1) + cyclohexane (3) and methanol (2) + cyclohexane (3) and dimethyl carbonate (1) + methanol (2) + cyclohexane (3) have been measured at 298.15 K and atmospheric pressure, over the miscible composition range. Excess molar volumes, changes of refractive index on mixing, and deviations in isentropic compressibility for the systems have been calculated. Redlich−Kister and Cibulka equations have been used to estimate the binary and ternary fitting parameters, and root-mean-square deviations from the regression lines are shown. Values of derived and excess properties were estimated by different methods and compared with experimental data. Excess partial molar volumes at infinite dilution are also calculated. The liquid−liquid equilibrium of dimethyl carbonate (1) + methanol (2) + cyclohexane (3) at 298.15 K and atmospheric pressure has been measured. The UNIQUAC equation was used to correlate the experimental data, and the root-mean-square d...