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Experimental data on dynamic viscosities and densities of binary mixtures of N,Ndimethylformamide (DMF) and o-xylene, m-xylene and p-xylene were measured at 293.15, 303.15, 313.15, and 323.15 K. Computed data from experiment for deviations in viscosity, excess molar volume and excess Gibbs energy of activation of viscous flow were correlated with Redlish-Kister polynomial equation. Grundberg-Nissan interaction constant (d'), Hind, Frenkel and a modified Kendall-Monroe equation (Eη m ) were determined quantitatively. Deviation in viscosity were both negative and positive while excess molar volume and excess Gibbs energy of activation of viscous flow were all positive. These results have been interpreted on the basis of intermolecular interactions between unlike molecules.

oriental journal of chemistry/oriental journal of chemistry

Derived thermodynamic properties of binary mixtures of m-Xylene, o-Xylene, and p-Xylene, with N,N-Dimethylformamide at T = (293.15, 303.15, 313.15 and 323.15) K