Mixtures of CuCl2 and KCl with molar ratios of Cu to K from 0.5 to 1.0 were heated at 393 K and then they absorbed water from the surroundings
at room temperature. DTA, TG and DTG curves were analyzed for the mixtures with absorbed water in the temperature range between
293 and 473 K. The mechanism of the phase changes and water release from the mixtures in the temperature range from 293 to
473 K is proposed.