Description: 8 bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers / 8 bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers/(636) dye or potential dye composition, additive, treatment, process, product, or ancillary dye operation (654) basic (cationic) dye containing strongly basic onium or alkylene imine group (655) heterocyclic onium group, e.g., pyridinium, etc.
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