Thermodynamics of amine plus ketone mixtures 3. Volumetric, speed of sound data and viscosity at (303.15 and 308.15K) for the binary mixtures of N,N-dimethylaniline plus propiophenone, plus p-methylacetophenone, plus p-chloroacetophenone

Densities rho, viscosities eta and ultrasonic sound speed u of pure propiophenone (PP), p-methylacetophenone (p-MeAP), p-chloroacetophenone (p-ClAP) and those of their binary mixtures prepared using N,N-dimethylaniline (N,N-DMA) as a common component, were measured at 303.15K and 308.15K over the entire composition range. These experimental data have been used to calculate excess volume V-E, excess ultrasonic velocity u(E), isentropic compressibility kappa(s), intermolecular free length L-f. acoustic impedance Z, excess isentropic compressibility kappa(E)(s), deviation in viscosity Delta eta and excess Gibbs free energy of activation of viscous flow (G*E) were evaluated. The viscosity data have been correlated using three equations; Grunberg and Nissan, Katti and Chaudhri and Hind et al. The excess/deviations have been fitted by a Redlich-Kister equation and the results are discussed in terms of molecular interactions present in these mixtures. (C) 2012 Elsevier B.V. All rights reserved.