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} |
619 | .~.~.~ Fluorine, bromine, or iodine produced |