Acid dye

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A large class of dyes containing one or more acidic end groups (sulfonic, phenolic, carboxylic, etc.) that react with the basic end groups found in amides (Silk, Wool, Leather, and Nylon) to form a uniform, lightfast color. Acid dyes are rarely used on Cotton or Linen. These dyes are soluble in weak solutions of Acetic, Formic, or Sulfuric acid and are normally applied from a fairly neutral dye bath of pH 6 or 7.

Synonyms and Related Terms

anionic dye; colorante ácido (Esp.); colorant acide (Fr.); colorante acido (It.); corante ácido (Port.)

Physical and Chemical Properties

Soluble in weak acid solutions.

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 284
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
  • Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
  • Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
  • Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980

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