Abstract—The results of studying the processes of electrochemical oxidation–reduction of bismuth in aqueous solutions of potassium chloride by the method of taking potentiodynamic polarization curves are presented. The influence of the concentration and temperature of the electrolyte and the sweep rate on the electrochemical behavior of bismuth is studied. The features of the influence of the electrolyte composition on the formation of bismuth oxychloride are studied. The optimal parameters of electrolysis for the production of bismuth oxychloride are revealed.