Density, viscosity, and speed of sound data for (sulfolane + ethyl acetate (EA)), (sulfolane + n-propyl acetate (PA)), and (sulfolane + n-butyl acetate (BA)) were determined at T ) (303.15 to 313.15) K. From this data, excess molar volume and deviation in isentropic compressibility, ∆κ s , have been calculated. The computed properties were fit to a Redlich-Kister polynomial.

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Measurement of densities, F, viscosities, η, and ultrasonic speeds, u, have been carried out for binary mixtures of phenylacetonitrile (PAN) with methylethylketone (MEK), methylpropylketone (MPK), methylisobutylketone (MIBK), and diethylketone (DEK) and their pure liquids at T ) 308.15 K over the entire composition range. From these experimental data, excess molar volumes, V E , deviations in viscosity, ∆η, and isentropic compressibility, ∆κ s , of aliphatic ketones with phenylacetonitrile have been calculated. The variation of these properties with composition of the mixture suggests dipole-dipole interactions and charge transfer complex formation between associated phenylacetonitrile molecules and dipolar ketones. The magnitude of the property is found to depend on the chain length of the ketone molecule. These results have been fitted to the Redlich-Kister polynomial using multiparametric nonlinear regression analysis to estimate the binary coefficients and standard errors. The experimental data are used to test the applicability of empirical relations of Grunberg and Nissan, Tamura and Kurata and Hind, and McLaughlin and Ubbelohde for the system studied.

The present paper reports the experimental data for density, ρ, viscosity, η, and speed of sound, u, for the binary mixtures of phenylacetonitrile (PAN) with aliphatic esters [ethyl acetate (EA), ethyl chloroacetate (ECA), and ethyl cyanoacetate (ECNA)] over the miscibility region (0 < x 1 < 1) at temperatures of (303.15, 308.15, and 313.15) K. The experimental data have been used to calculate various properties like the excess molar volume V E and deviation in isentropic compressibility Δκs. These properties are used to interpret the molecular interactions in the binary mixtures. The Redlich−Kister polynomial equation was fitted to the experimental data to derive binary coefficients and standard deviations.