Temperature dependence of the permittivity of water

In a previous work the temperature dependence of the permittivity of some pure normal alcohols was analyzed. The experimental values were fitted to a modification of Onsager’s equation. In this work, the static permittivity of water at different temperatures was measured and its values were fitted to the same equation used for alcohols. One parameter of the fittings agrees with the tendency observed for the alcohols and the other tends to the square of the refractive index. A good agreement was obtained between the experimental values and the fittings, this fact showing that water behaves, under this point of view, like an alcohol.