Physical Properties of the Ternary Mixture Dimethyl Carbonate + Methanol + Benzene and Its Corresponding Binaries at 298.15 K

Abstract

Density, refractive index, and speed of sound of the binary dimethyl carbonate + methanol, dimethyl carbonate + benzene and methanol + benzene and the ternary dimethyl carbonate + methanol + benzene mixtures have been measured at 298.15 K and atmospheric pressure, over the entire composition range. These results are used to calculate excess molar volumes, changes of refractive index on mixing, and deviations in isentropic compressibility for the above systems. The calculated quantities are further fitted to the Redlich−Kister and the Cibulka equations to estimate the binary and ternary fitting parameters, respectively, and root-mean-square deviations from the regression lines. Values of derived and excess properties were estimated and compared by different methods. Excess partial molar volumes at infinite dilution are also calculated.