A dielectric binary mixture formula with an interaction term

A new dielectric binary mixture formula that generalizes Beer's equation is derived by imposing an effective medium theory on the simple rule of mixtu res modified by the addition of an interaction term. Dielectric constants o f the binary system carbon tetrachloride/1,2-dichloroethane measured at dif ferent frequencies and of carbon tetrachloride/butan-2-ol at different temp eratures are used to test the applicability of the new mixture formula. Goo dness of fit to the experimental data is found. (C) 1998 Kluwer Academic Pu blishers.