Refractive indices and surface tensions of binary mixtures of 1,4-dioxane plus n-alkanes at 298.15 K

Refractive indices and surface tensions for the binary liquid mixtures {1,4 -dioxane + hexane, heptane, octane, nonane, and decane} at the temperature 298.15 K and normal atmospheric pressure, have been determined as a functio n of mole fractions. The magnitude of these experimental quantities is disc ussed in terms of the nature and type of intermolecular interactions in bin ary mixtures. Refractive index data, together with dielectric permittivity and dipolar moment of pure liquids, were used to calculate the dielectric p ermittivity for the mixtures by using the Frolich equation.