The integral heat effects of CuCl2 dissolution in aqueous DMSO, aqueous ethanol and aqueous acetone solutions at 298.15 K in the electrolyte concentration range 0.001-0.01 M were measured by means of calorimetry. Delta H-sol(0) values were obtained by extrapolation to zero electrolyte concentration. Literature data were used to determine the thermodynamic characteristics of CU2+ transfer from water to aqueous organic solvents.