Density, Viscosity, and Speed of Sound of (1-Octanol + 2-Methoxyethanol), (1-Octanol + N,N-Dimethylacetamide), and (1-Octanol + Acetophenone) at Temperatures of (298.15, 308.15, and 318.15) K

Abstract

Densities and viscosities of the binary mixtures of 1-octanol + 2-methoxyethanol (2ME), + N,N-dimethylacetamide (DMAc), and + acetophenone (APH) were measured over the entire range of composition at T = (298.15, 308.15, and 318.15) K. Ultrasonic speeds of these binary mixtures have also been measured at 298.15 K. From the experimental data, values of excess molar volumes (VE), viscosity deviations (Δη), and excess isentropic compressibility (κSE) have been calculated. These results were fitted to the Redlich−Kister polynomial equation. Partial molar volumes of 2ME/DMAc/APH in 1-octanol at infinite dilution and at different temperatures have also been evaluated. The results were discussed in terms of molecular interactions prevailing in the mixtures. The measured viscosities were correlated with McAllister’s three-body interaction model.