Densities and viscosities of mixing for the binary system of methyl benzoate with n-nonane at different temperatures

Abstract

Viscosity and density measurements are reported for the binary liquid mixtures of methyl benzoate with n-nonane at six different temperatures between 288.15 and 318.15 K. Excess volumes, excess viscosities, excess free energies of activation for viscous flow, and the contact interaction parameters were calculated. The system studied exhibits positive-negative excess molar volumes depending on the ester concentration; however, the excess viscosities and excess activation energies of viscous flow are negative over the entire range of compositions. The behavior of the mixtures is also discussed. © 1991.