Densities and Viscosities of Alkylethanoates +Cyclohexane, +Benzene, +1,4-dimethylbenzene, and +1,3.5-trimethylbenzene at 308.15 K

Densities (ρ12) and viscosities (η12) of binary mixtures of alkylethanoates, + cyclohexane, benzene, 1,4-dimethylbenzene and 1,3,5-trimethylbenzene have been measured over the whole mole fractions range at atmospheric pressure and temperature 308.15 K. Deviations of experimental viscosities from the linear mixing rule (Δη) for binary mixtures of the esters and cyclohexane are large and negative. Δη values are less and negative for binary mixtures of esters and aromatic hydrocarbons except binary mixtures of n-propylethanoate and benzene which show less positive Δη values. Δη values for binary mixtures of ethylethanoate + 1,4-dimethylbenzene, +1,3,5-trimethylbenzene and n-propylethanoate +1,4-dimethylbenzene are both less negative and less positive. Δη values are fitted into Redlich-Kister polynomial equation and standard deviations, σ of Δη for all the binary mixtures are reported. Several viscosity equations are critically analysed. The strengths of molecular interactions are discussed on the basis of Grunberg-Nissan interaction parameters.