| 252 / | HD | COMPOSITIONS |
| 182.11 | DF | COMPOSITIONS CONTAINING A SINGLE CHEMICAL REACTANT OR PLURAL NONINTERACTIVE CHEMICAL REACTANTS; I.E., NOT VIS-A-VIS {2} |
| 182.12 | DF | .~ Organic reactant {4} |
| 182.13 | DF | .~.~ For subsequent solid polymer treatment or preparation; e.g., crosslinking, grafting, curing, hardening, vulcanizing, etc. {4} |
| 182.14 | DF | .~.~.~ Reactant contains element other than C, H, O, or N {2} |
| 182.15 | DF | .~.~.~.~ Halogen {1} |
| 182.16 | | .~.~.~.~.~ Bromine or iodine |