Difference between revisions of "Indicator dye"

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Revision as of 13:31, 27 April 2013

Description

An organic colorant that exhibits different colors in acidic and alkaline solutions. Indicator dyes are used to determine pH values. Examples are natural indicators are archil, litmus, turnsole, and logwood. Some synthetic indicator dyes are phenolphthalein, dinitrophenol, green bromcresol green and red chlorophenol red.

Synonyms and Related Terms

Farbindikator (Deut.); indicador cido-base (Esp., Port.); indicateur color (Fr.); acid-base indicator

Authority

  • Richard S. Lewis, Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • R.D. Harley, R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982
  • Matt Roberts, Don Etherington, Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982

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