| 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} |
| 657 | DF | .~ Basic dye, including diphenylmethane, triphenylmethane, xanthene, fluorene, methine, acridine, oxazine, phenazine, flavylium, naphthoperinone, quinophthalone, etc., group-containing {2} |
| 659 | | .~.~ Methine group |