Volumetric and Ultrasonic Studies of Molecular Interactions in n-Alkoxypropanols + Alkyl Acetates Mixtures at Different Temperatures

Abstract

Densities and ultrasonic velocities have been measured over the whole composition range for the binary liquid mixtures of dipropylene glycol monomethyl ether (mixture of isomers) {CH3(OC3H6)2OH}, dipropylene glycol monopropyl ether (mixture of isomers) {CH3(CH2)2(OC3H6)2OH}, and dipropylene glycol monobutyl ether (mixture of isomers){CH3(CH2)3(OC3H6)2OH} with alkyl acetates using an Anton Paar DSA 5000 density and speed sound analyzer in the temperature interval (288.15 to 308.15) K and atmospheric pressure. From these experimental data, excess molar volume, VmE and deviations in isentropic compressibility, ΔκS, have been calculated. The computed results of these quantities have been correlated using the Redlich–Kister polynomial equation to obtain the binary coefficients and standard deviations.