Density and viscometric study of binary liquid mixtures of morpholine with some aromatic hydrocarbons at temperatures 303.15, 308.15 and 313.15 K

The experimental data of densities and viscosities of the binary mixtures of morpholine with benzene, toluene, m-xylene and mesitylene have been reported over the whole composition range at (303.15 to 313.15) K at normal atmospheric pressure. Experimental data on density and viscosity have been used to derive excess properties like excess molar volumes V E , viscosity deviations ( Δ η ) and Gibbs energy of activation for viscous flow (GE) as a function of composition. The experimental viscosity data have been correlated with the two body empirical equations like Grunberg–Nissan, Dolezalek–Schulze, Tamura–Kurata, Katti–Chaudhri and three body McAllisterʹs equation. Interaction parameters D12, G12, T12, and Wvis/RT have been calculated. The experimental determined values of VE, Δη and GE were fitted to the Redlich–Kister-type polynomial equation. The variation of these properties with composition and temperature of the binary mixtures are discussed in terms of intermolecular interactions between unlike molecules.