On the pressure and electric field dependencies of the relative permittivity of liquids

The dependencies of the relative permittivity epsilon of over 50 liquids on the pressure P, as (partial derivative ln epsilon/P)(T, P0), and of some 4 0 liquids on the (square of the) electric field E at ambient conditions, as beta = [partial derivative epsilon/partial derivative(E-2)](T, P0) were ob tained from literature data. The function (partial derivative ln epsilon/pa rtial derivative P)(T, P0) was fitted to a simple expression in epsilon and the compressibility, kappa(T). These data were used to obtain the limiting slope for the partial molar volumes and the electrostriction of electrolyt es in various solvents.