#dye__dyestuff  a usually soluble substance for staining or coloring e.g. fabrics or hair
  supertype:  #coloring_material__colouring_material__colouringmaterial__color__colour  any material used for its color
  subtype:  #acid_dye  #alizarin_yellow  #anil  #aniline_dye  #azo_dye  #basic_dye  #blueing  #bromophenol_blue  #bromothymol_blue  #cochineal  #cyanine_dye  #direct_dye  #fluorescein  #fluorochrome  #hair_dye  #Kendal_green  #lac_dye  #lead_acetate  #cudbear  #quercitron  #radiopaque_dye  #Tyrian_purple.dye  #vat_dye  #woad.dye
  part:  #chromophore  the chemical group that gives color to a molecule

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