1) Alizarine 2) Chelating agent 3) Darker shade of crimson 4) Pigment 5) Red pigment
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1) Alizarine 2) Dye
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Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red) is an organic compound with formula {chem|C|14|H|8|O|4} that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first nat...
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http://en.wikipedia.org/wiki/Alizarin
• (n.) A coloring principle, C14H6O2(OH)2, found in madder, and now produced artificially from anthracene. It produces the Turkish reds.
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http://thinkexist.com/dictionary/meaning/alizarin/
a red dye originally obtained from the root of the common madder plant, Rubia tinctorum, in which it occurs combined with the sugars xylose and ... [3 related articles]
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http://www.britannica.com/eb/a-z/a/46
1,2-dihydroxyanthracene-9,10-dione
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http://www.chemicalglossary.net/definition/132-Alizarin
1,2-dihydroxyanthraquinone, a once-important orange-red dye, originally extracted from the root of the madder (Rubia tinctorum) but after 1871 made synthetically from anthraquinone by a process developed by William Perkin (1869). An earlier German synthesis (1868) was the first laboratory preparatio...
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http://www.daviddarling.info/encyclopedia/A/alizarin.html
A·liz'a·rin noun [ French
alizarine , from
alizari .]
(Chemistry) A coloring principle, C
14 H
6 O
2 (OH)
2 , found in madder, and now produced artificially from anthracene. It produces the Turkish reds.
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http://www.encyclo.co.uk/webster/A/56
Type: Term Pronunciation: ă-liz′ă-rin Definitions: 1. a red dye that occurs in the root of madder (Rubia tinctorum and other Rubiaceae) in glucose combination (ruberythric acid) as orange needles, slightly soluble in water; used by the ancients as a dye. Now produced synthetically from anthracene and used in the manufacture of dyes,...
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http://www.medilexicon.com/medicaldictionary.php?t=2214
[
n] - an orange-red crystalline compound used in making red pigments and in dyeing
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http://www.webdictionary.co.uk/definition.php?query=alizarin
alizarine noun an orange-red crystalline compound used in making red pigments and in dyeing
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https://www.encyclo.co.uk/local/20974
a solid appearing reddish-orange as crystals and brownish-yellow as powder, CHO, one of the earliest known dyes, formerly obtained in its natural state from madder and now derived from anthraquinone: used chiefly in the synthesis of other dyes.
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