| 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} |
| 680 | DF | .~.~ Dye containing -(O=)S(=O)-O-, -O(O=)S(=O)-O- or phosphorus oxide group {1} |
| 681 | | .~.~.~ Sulfonated azo {1} |
| 682 | DF | .~.~.~.~> Monoazo {1} |