Density,viscosity and refractive index for binary mixtures of N-methylimidazole with methanol at 293.15 K and over the full molar fraction range were measured.Gibbs energy of activation of viscous flow,excess molar volume,viscosity and refractive index deviations were calculated from these properties data.As a function of the molar fraction of N-methylimidazole,the density,viscosity,refractive index and Gibbs energy of activation of viscous flow were correlated by a third-order polynomial equation.As a func...