Density, Viscosity, and Speed of Sound of Dialkyl Carbonates with Cyclopentane and Methyl Cyclohexane at Several Temperatures

Abstract

Densities, speeds of sound, and viscosities have been measured for the binary mixtures dimethyl carbonate + cyclopentane and diethyl carbonate + cyclopentane or methylcyclohexane at T = (293.15, 298.15, 303.15, 308.15, and 313.15) K and atmospheric pressure. Excess molar volumes, viscosity deviations, and deviations in isentropic compressibility for the above systems have been derived. Derived quantities have been fit to a polynomial equation as a function of mole fraction and temperature. The obtained fitting parameters are listed. Correlated equations have been proposed, and the results in terms of root-mean-square deviations are shown. The UNIFAC−VISCO group contribution method has been used to predict the dynamic viscosities at the above temperatures for the binary mixtures.