DIELECTRIC STUDIES OF LIQUIDS AND LIQUID-MIXTURES

Dielectric constants, densities and refractive indices of 28 organic l iquids at 303.15 K and dielectric constants of four binary mixtures of 1,3,5-trimethylbenzene with n-heptane, n-octane, n-hexadecane and cyc lohexane at 298.15 K have been determined using a microprocessor-based digital LCR-Sortester. The data on pure liquids have been used to cal culate the dipole moments by using the equations of Onsager, Kirkwood, Syrkin and Jatkar. Similarly, the dielectric results of the binary mi xtures are used to calculate the excess dielectric constants from the dielectric mixing rules of the dielectric theories of Debye, Onsager a nd Kirkwood.