| 252 / | HD | COMPOSITIONS |
| 380 | DF | PRESERVATIVE AGENTS {3} |
| 397 | DF | .~ Anti-oxidants or chemical change inhibitants {2} |
| 399 | DF | .~.~ Organic compound containing {8} |
| 400.1 | DF | .~.~.~ Component inorganic or organic comprising element other than C,H,O,N,S, and halogen {8} |
| 400.4 | | .~.~.~.~ Boron containing {1} |
| 400.41 | DF | .~.~.~.~.~> Organo boron |