205 / | HD | ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS |
334 | DF | ELECTROLYTIC SYNTHESIS (PROCESS, COMPOSITION, AND METHOD OF PREPARING COMPOSITION) {21} |
615 | DF | .~ Preparing nonmetal element {8} |
618 | DF | .~.~ Halogen produced {3} |
622 | .~.~.~ Utilizing specified electrode other than graphite or inorganic carbon {3} | |
623 | DF | .~.~.~.~> Mercury or amalgam cathode |
624 | DF | .~.~.~.~> Diaphragm or membrane bonded electrode |
625 | DF | .~.~.~.~> Coated electrode |