Disperse dye

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Disperse dyes are the only water-insoluble dyes that dye polyester[1] and acetate fibers. Disperse dye molecules are the smallest dye molecules among all dyes.[citation needed]

A disperse dye molecule is based on an azobenzene (as Disperse Red 1 or Disperse Orange 37)[2] or anthraquinone[3] molecule with nitro, amine, hydroxyl, etc. groups attached to it.[1][not in citation given]