210 / | HD | LIQUID PURIFICATION OR SEPARATION |
600 | DF | PROCESSES {14} |
702 | DF | .~ Making an insoluble substance or accreting suspended constituents {14} |
729 | DF | .~.~ Utilizing organic precipitant {2} |
732 | DF | .~.~.~ Synthetic polymer {2} |
735 | DF | .~.~.~.~ Nitrogen containing (e.g., amine, azo, etc.) {1} |
736 | .~.~.~.~.~ Derived from alkyl halide or epihalophydrin reactant |