Poly-(p-phenylene) has been obtained in electrochemical oxidation of benzene in the BuPyCl-AlCl₃ melt. The conductivity of the fresh film is 10-100 S/cm. Even when the film is stored in the dry inert atmosphere, its conductivity reduces. Poly-(p-phenylene) has been also obtained in electrooxidation of benzene with oleum or P₂O₅. Electrochemical properties and IR and ESR spectra have been investigated. The SEM data on the film morphology have been also discussed