| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 300 | DF | .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11} |
| 700 | DF | .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10} |
| 840 | DF | .~.~.~ Acyclic {16} |
| 913 |  | .~.~.~.~ Purification or recovery {8} |
| 914 | DF | .~.~.~.~.~> By reduction (e.g., by hydrogenation, etc.) |
| 915 | DF | .~.~.~.~.~> By oxidation |
| 916 | DF | .~.~.~.~.~> By dehydration |
| 917 | DF | .~.~.~.~.~> By sorption |
| 918 | DF | .~.~.~.~.~> By plural liquid phase separation {1} |
| 920 | DF | .~.~.~.~.~> Alkali or alkaline earth metal containing compound utilized {1} |
| 922 | DF | .~.~.~.~.~> Heavy metal or aluminum containing compound utilized |
| 923 | DF | .~.~.~.~.~> By crystallization of hydroxy compound or by forming hydroxy containing addition compound |