Dielectric properties of polar solutes in non-polar solvents at microwave frequencies

Abstract

The dielectric loss and permittivity of solutions of polar molecules in non-polar solvents have been measured at frequencies 9.2 × 109 c/s and 3.5 × 1010 c/s. At the lower frequency independent determinations of absorption and wavelength were made on solutions of benzophenone over the temperature range 10 to 30° C. At the higher frequency the solute investigated was nitromethane and the temperature range was 10 to 40° C. Values of dipole moments obtained were 2.95 Debye units and 2.855 Debye units for benzophenone and nitromethane respectively.