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The Collaborative International Dictionary

Alizarin \A*liz"a*rin\, Alizarine \A*liz"a*rine\, n. [F. alizarine, fr. alizari.] (Chem.) A coloring principle, C14H6O2(OH)2, found in madder, and now produced artificially as an an orange-red crystalline compound from anthracene. It is used in making red pigments (such as the Turkish reds), and in dyeing.


n. 1 (cx chemistry English) A substance, 1,2-dihydroxyanthraquinone, extracted from madder root and having a distinctive red colour. 2 A type of red or crimson dye


n. an orange-red crystalline compound used in making red pigments and in dyeing [syn: alizarine]


Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red) is an organic compound with formula 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 natural pigment to be duplicated synthetically.

Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painters as Rose madder and Alizarin crimson. Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue. A notable use of alizarin in modern times is as a staining agent in biological research because it stains free calcium and certain calcium compounds a red or light purple color. Alizarin continues to be used commercially as a red textile dye, but to a lesser extent than 100 years ago.

Usage examples of "alizarin".

Then the colors leaked away one by one, chroma weakening: purple-blue, manganese violet, discord, cobalt blue, doubt, affection, chrome green, chrome yellow, raw sienna, contemplation, alizarin crimson, irony, silver, severity, compassion, cadmium red, white.

Log-wood ink marks are mostly reddened by oxalic acid, and alizarin marks become bluish, but aniline inks are unaffected.

With hydrochloric acid, logwood ink marks turn reddish or reddish-gray, alizarin marks greenish, and aniline ink marks reddish or brownish-gray.

In 1870 the German chemists, Graebe and Liebermann, announced that they had succeeded in producing artificial alizarin,--the coloring matter of the madder root.

Springmuhl in 1873 obtained an accessory product in the artificial manufacture of alizarin out of anthracene, from which a beautiful blue was made, superior in many respect to the aniline blues.

There was alizarin crimson, magenta, and that thorn in the backside of the sinful, sister terra rosa.

There were daubs of yellow and green paint across his jeans, and a freckle of alizarin crimson on the bridge of his nose.

She dried their dripping bodies and brought them lounging robes dyed with red alizarin and went back to her tiny string instrument that permeated the conversation, listening.

This was augmented bythe discovery of alizarin dyes in 1868 and the azo dyes in 1876.

Its gold was tinged with cobalt among the knights of the Crown Prince, while those who surrounded the High King glinted with a tint of alizarin, as though sunset flowed in fluid lines of flame over their war-harness.

Across the chamber, stripped of his state collar and muffled under the half-shucked folds of the alizarin and gold ducal surcoat, Bransian launched into interrogation.

The glaucous green shivered into calcimine, then livid purple, then dazzling alizarin and fuchsine and chrome orange and barium yellow.

Brent found himself easily drawn into conversation on the merits of alizarin crimson and the influence of Byzantine art on Renaissance Italy.

I have had a night of untarnished creativity and this joke just popped out like a final splat of Alizarin Crimson.

They were arrayed alike in fine alizarin silk, with gold embroidery at cuffs and hem.