Viscosities, Densities, and Speed of Sound of the Cycloalkanes with Secondary Alcohols at T = (293.15, 298.15, and 303.15) K:  New UNIFAC−VISCO Interaction Parameters

In this work, dynamic viscosities, densities, and speeds of sound have been measured over the whole composition range and at 0.1 MPa for binary mixtures (cyclopentane and cyclohexane with 2-propanol, 2-butanol, and 2-pentanol) at several temperatures T = (293.15, 298.15, and 303.15) K along with the properties of the pure components. Excess molar volumes, molar isentropic compressibilities, excess molar isentropic compressibilities, and viscosity deviations for the binary systems at the above-mentioned temperatures were calculated and fitted to the Redlich−Kister equation to determine the fitting parameters and the root-mean-square deviations. The UNIQUAC equation was used to correlate the experimental viscosity data. The UNIFAC−VISCO and ASOG−VISCO methods, which are based on contribution groups, were used to predict the dynamic viscosities of the binary mixtures. The interaction parameters of cycloalkanes with a secondary alcohol (CHcy/OHs) have been determined for their application in the predictive UNIFAC−VISCO method.