from The Century Dictionary and Cyclopedia

  • n. A direct cotton coal-tar color (azo-mauve B) of the diazo-sulphonic-acid type, derived from toluidine. It dyes unmordanted cotton a blackish-blue violet in a soap bath.
  • n. A direct cotton coaltar color (azo-mauve R) similar to azo-mauve B, but derived from benzidine instead of toluidine.


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