Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

Abstract

New experimental data on densities at (298.15 to 313.15) K, viscosities, speeds of sound, and relative permittivities at (298.15 and 308.15) K for the 10 binary mixtures of alkyl (methyl, ethyl, butyl, and isoamyl) acetates + glycols (ethylene, diethylene, triethylene, and propylene) have been measured as a function of the composition. Deviation functions, such as deviations in speeds of sound and deviations in relative permittivities, and excess functions, such as excess molar volumes and excess isentropic compressibilities, were calculated and fitted to a Redlich−Kister type equation. Grunberg−Nissan, McAllister, and Auslander equations correlated the mixture viscosities adequately. The values of speeds of sound in these mixtures, as predicted by collision factor theory, matched well with experimental data. The variation of the Kirkwood correlation factor with the ester mole fraction was examined. A qualitative analysis of the deviation and excess functions was made to ascertain the nature and type of b...