The conductance of the solutions of copper carboxylates (caproate, caprylate, caprate, laurate and myristate) has been measured with a view to determine the C.M.C. (critical micellar concentration), molar conductance at infinite dilution. The results show that the specific conductance of the solutions of copper carboxylates increases with increase carboxylate concentration and also increases with the chain length of the carboxylates. The value of C.M.C decreases with the increase in the chain length of the carboxylates. The molar conductances at infinite dilute and degree of ionization have been evaluated.