Experimental densities, viscosities, and heat capacities at different temperatures were measured over the entire mole fraction range for the binary mixture of ethylene glycol + water. Density values were used in the determination of excess molar volumes, V E . The excess volumes, V E , are fitted as a function of the mole fraction to a polynomial. ∆η was fitted to the Redlich-Kister equation. The excess volumes are negative over the entire composition at the lower temperatures. They show a U-shaped concentration dependence and decrease in absolute value with increasing temperature. At high temperatures, the excess molar volume shows an S-shaped dependence. ∆η values are negative over the entire range of mole fraction and have a very similar trend to that for V E . The heat capacities of mixtures have the maximum values at x 1 ) 0.0312.

Densities and viscosities for p-xylene with cyclohexane, heptane, octane, and N-methyl-2-pyrrolidone were determined from (298.15 to 353.15) K and at atmospheric pressure. The measurements were carried out over the whole range of composition, using a vibrating-tube density meter and a Ubbelohde viscometer. Density and viscosity measurements were used to compute the excess molar volumes, V E , and viscosity deviations, ∆η. The excess molar volumes, V E , and viscosity deviations, ∆η, have been fit to the Redlich-Kister equation, and the coefficients and estimates of the standard error values are given.

Densities and viscosities of the binary mixtures of diethyl carbonate (DEC) with 1-propanol, 1-butanol, and 1-pentanol have been determined at (293.15 to 363.15) K and at atmospheric pressure. Excess molar volumes and viscosity deviations for the binary mixtures were fitted to the Redlich−Kister equation. Dependences of excess molar volumes and viscosity deviations with carbon chain length were discussed. The UNIFAC-VISCO method, based on contribution groups, has been used to calculate the dynamic viscosities of the binary mixtures. The percentage deviations between experimental and predicted values are given.

Experimental data on density and viscosity at 303.15 and 323.15 K are presented for the binary mixtures of sulfolane + benzene, toluene, ethylbenzene, p-xylene, o-xylene, and m-xylene. From these data, excess molar volumes and deviations in viscosity have been calculated. The computed quantities have been fitted to the Redlich-Kister equation to derive the coefficients and estimate the standard error values. The results are discussed in terms of the intermolecular interactions.

Experimental densities, viscosities, and heat capacities were measured over the entire mole fraction range for the binary mixture of 1,4-butanediol + water mixtures over a temperature range. From these data, excess molar volumes, deviations in viscosity, and excess molar heat capacities were computed. The V E, Δη, and were fitted to the Redlich−Kister equation using a multiparametric nonlinear regression analysis. Estimated coefficients and standard error values for the mixing quantities are presented. V E is negative for 1,4-butanediol + water mixtures at all temperatures and over the entire compositions. Δη vs x 1 shows sinusoidal shape. The values of are positive in the whole range of mole fraction and increase with raising temperature at constant x 1. The curve has large maximum values located in the x 1 = 0.23.