Microwave dielectric relaxation in chemical industries solvents

In this paper microwave dielectric relaxation times of cellosolves in dilute solutions of carbon tetrachloride are reported. These have been calculated using Higasi's equations by measurement of permittivity epsilon' and dielectric loss epsilon " at 9.83 GHz. It is observed that average relaxation time tau(0) and relaxation time for overall rotation tau(1) both increases while relaxation time tau(2) for group rotation decreases with the increase in molecular size of the molecules. These results have been compared with earlier relaxation data in benzene solutions and pure liquid state and discussed.