A STUDY OF THE ANOLYTES PARAMETERS OF LI, K, CS-CHLORIDES SOLUTIONS AFTER THE DIAPHRAGM ELECTROLYZER TREATMENT

There were studied physicochemical (pH, redox-potential, electroconduc tivity) and spectral parameters of the alkaline metal chlorides (Li, K , Cs) anolytes. From comparison of these anolyte parameters between di aphragm and nondiaphragm electrolyzers it is seen that in case of pota ssium chloride in the diaphragm electrolyzer anolyte at low pH (2-3) i s formed hypochlorous acid. After titration of the formed solution wit h potassium hydroxide at pH 5-6 the hypochlorous acid content is decre ases, and at pH 8-9 potassium hypochloride is formed as well after sol ution treatment in nondiaphragm electrolyzer. In cases of Li and Cs th e molecular chlorine is formed in the diaphragm electrolyzer anolyte, and in the nondiaphragm electrolyzer solution corresponding hypochlori des are formed. An analysis of molecular chlorine, hypochlorous acid a nd hipochlorides was performed according to spectra at titration of so lutions with sodium thiosulfate. Heating df solutions completely remov es the molecular chlorine, significantly decreases hypochlorous acid c ontent and slightly decreases hypochlorides 0,145 M potassium chloride in potassium phosphate buffer after the diaphragm and nondiaphragm el ectrolyzers treatment contains hypochlorous acid and potassium hypochl oride at the same time, at pH 7,0-7,5.