m and temperatures of 288–323 K in the region of water dielectric permittivity dispersion. The values of high-
frequency of dielectric permittivity (
) and dielectric losses ('') were obtained at seven frequencies ranging between 7.5 and 25 GHz. The low-frequency electrical conductivity of the aforementioned solutions was mea-
sured for calculating ionic losses. A single relaxation process is observed in these solutions, fitted by the Debye
or Cole–Cole equation with small distribution parameters. The static dielectric constant and dielectric relax-
ation time were studied as functions of temperature and concentration; the activation enthalpy of dielectric
relaxation was calculated. The temperature dependence of the static dielectric constant was found to disappear
in highly concentrated solutions. The structure-breaking effect on water caused by K+ and I– ions was affirmed,
this effect disappearing in going to elevated temperatures.