Volumetric, Viscometric, Acoustic and IR Spectroscopic Studies of Binary Mixtures of Tert-butyl Acetate with Isopropylbenzene, Isobutylbenzene and Methoxybenzene at T=298.15 and 308.15 K

Rajashri B Sawant

Abstract

Densities, viscosities, speed of sound and IR spectroscopy of binary mixtures of tert-butyl acetate (tBA) with isopropylbenzene, isobutylbenzene, methoxybenzene have been measured over the entire range of composition, at (298.15 and 308.15) K and at atmospheric pressure. From the experimental values of density, viscosity, speed of sound and IR spectroscopy the excess molar volumes (VE), deviations in viscosity (Δη) and deviation in isentropic compressibility (Δks) and stretching frequency () have been calculated. The excess molar volumes and deviations in isentropic compressibility with tBA are positive for the mixtures of isobutylbenzene and methoxybenzene with tBA and, negative for isopropylbenzene with tBA while deviations in viscosities are negative for the binary mixtures of isobutylbenzene, methoxybenzene and positive for isopropylbenzene. The excess molar volumes, deviations in viscosity and, deviations in isentropic compressibility have been fitted to the Redlich-Kister polynomial equation.