Difference between revisions of "Indicator dye"
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== Description == | == Description == | ||
| − | An organic colorant that exhibits different colors in acidic and alkaline solutions. Indicator dyes are used to determine [http://cameo.mfa.org/materials/fullrecord.asp?name=pH pH] values. Examples are natural indicators are [http://cameo.mfa.org/materials/fullrecord.asp?name=archil archil], [http://cameo.mfa.org/materials/fullrecord.asp?name=litmus litmus], [http://cameo.mfa.org/materials/fullrecord.asp?name=turnsole turnsole], and [http://cameo.mfa.org/materials/fullrecord.asp?name=logwood logwood]. Some synthetic indicator dyes are [http://cameo.mfa.org/materials/fullrecord.asp?name=phenolphthalein phenolphthalein], [http://cameo.mfa.org/materials/fullrecord.asp?name=dinitrophenol dinitrophenol], [http://cameo.mfa.org/materials/fullrecord.asp?name=bromcresol | + | An organic colorant that exhibits different colors in acidic and alkaline solutions. Indicator dyes are used to determine [http://cameo.mfa.org/materials/fullrecord.asp?name=pH pH] values. Examples are natural indicators are [http://cameo.mfa.org/materials/fullrecord.asp?name=archil archil], [http://cameo.mfa.org/materials/fullrecord.asp?name=litmus litmus], [http://cameo.mfa.org/materials/fullrecord.asp?name=turnsole turnsole], and [http://cameo.mfa.org/materials/fullrecord.asp?name=logwood logwood]. Some synthetic indicator dyes are [http://cameo.mfa.org/materials/fullrecord.asp?name=phenolphthalein phenolphthalein], [http://cameo.mfa.org/materials/fullrecord.asp?name=dinitrophenol dinitrophenol], [http://cameo.mfa.org/materials/fullrecord.asp?name=bromcresol%20green bromcresol green] and [http://cameo.mfa.org/materials/fullrecord.asp?name=chlorophenol%20red chlorophenol red]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | Farbindikator (Deut.); indicador | + | Farbindikator (Deut.); indicador ácido-base (Esp., Port.); indicateur coloré (Fr.); acid-base indicator |
== Authority == | == Authority == | ||
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
| − | * | + | * R.D. Harley, ''Artists' Pigments c. 1600-1835'', Butterworth Scientific, London, 1982 |
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 07:55, 24 July 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, bromcresol green and chlorophenol red.
Synonyms and Related Terms
Farbindikator (Deut.); indicador ácido-base (Esp., Port.); indicateur coloré (Fr.); acid-base indicator
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982