Difference between revisions of "Alizarin orange"

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Mordant Orange 14; CI 58015; 3-nitroalizarin; 1,2-dihydroxy-3-nitroanthraquinone; anaranjado de alizarina (Esp.); orange d'alizarine (Fr.); arancio d'alizarina (It.); alaranjado de alizarina (Port.); Alizarine orange
 
Mordant Orange 14; CI 58015; 3-nitroalizarin; 1,2-dihydroxy-3-nitroanthraquinone; anaranjado de alizarina (Esp.); orange d'alizarine (Fr.); arancio d'alizarina (It.); alaranjado de alizarina (Port.); Alizarine orange
  
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== Physical and Chemical Properties ==
 
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== Sources Checked for Data in Record ==
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==Resources and Citations==
  
 
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
 
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)

Latest revision as of 09:25, 26 April 2022

Description

Alizarin orange produces bright, orange needles or plates when precipitated from an acetic acid solution. It is used to dye cloth orange with an alum mordant or a red to violet color when used with an iron mordant. Alizarin orange is also used as an acid-base indicator. In aqueous solutions, it changes from an orange at pH 2.0 to a yellow at pH 4.0. In a saturated alcohol solution, alizarin orange changes from yellow at pH 5.0 to a purplish red at pH 6.5.

See also alizarin.

Synonyms and Related Terms

Mordant Orange 14; CI 58015; 3-nitroalizarin; 1,2-dihydroxy-3-nitroanthraquinone; anaranjado de alizarina (Esp.); orange d'alizarine (Fr.); arancio d'alizarina (It.); alaranjado de alizarina (Port.); Alizarine orange

Physical and Chemical Properties

Composition C14H7NO6
Molecular Weight 285020

Resources and Citations

  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 235