| 8 / | HD | BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS |
| 636 | DF | DYE OR POTENTIAL DYE COMPOSITION, ADDITIVE, TREATMENT, PROCESS, PRODUCT, OR ANCILLARY DYE OPERATION {12} |
| 662 | DF | .~ Azo, acridone, or quinone dye {15} |
| 685 | DF | .~.~ Metallized dye, including metallization during dyeing (i.e., including in situ forming of metallized dye) {1} |
| 686 | | .~.~.~ Heterocyclic |