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 /spl epsi/' and dielectric loss /spl epsi/" at 9.83 GHz. It is observed that average relaxation time /spl tau//sub 0/ and relaxation time for overall rotation /spl tau//sub 1/ both increases while relaxation time /spl tau//sub 2/ for group rotation decreases with the increase in molecular size. These results have been compared with earlier relaxation data in benzene solutions and pure liquid state and discussed.