Flavopurpurin

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Structural formula
Structural formula of flavopurpurin
General
Surname Flavopurpurin
other names
  • 1,2,6-trihydroxyanthracene-9,10-dione
  • 1,2,6-trihydroxyanthraquinone
  • Alizarin GI
  • CI 58240
  • CI Mordant Red 4
Molecular formula C 14 H 8 O 5
Brief description

brown-yellow solid

External identifiers / databases
CAS number 82-29-1
PubChem 65739
ChemSpider 59162
Wikidata Q27117164
properties
Molar mass 256.21 g mol −1
Physical state

firmly

Melting point

336 ° C

boiling point

459 ° C

solubility
  • slightly soluble in boiling water
  • Easily soluble in alcohol and benzene
  • Easily soluble in glacial acetic acid
safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Flavopurpurin is a chemical compound from the group of alizarin dyes .

Extraction and presentation

Flavopurpurin can be obtained by reacting 2,6-anthraquinone disulfonic acid with concentrated aqueous alkali.

properties

Flavopurpurin is a solid present as brownish yellow crystal needles that is soluble in boiling water. In caustic soda to Flavopurpurin solves red-violet color.

use

Flavopurpurin, a typical alizarin dye, dyes aluminum-stained wool and cotton scarlet red.

Individual evidence

  1. ↑ a b c d e f Entry on flavopurpurin. In: Römpp Online . Georg Thieme Verlag, accessed on March 6, 2018.
  2. ↑ a b F.K. Beilstein: Handbook of organic chemistry . Рипол Классик, 2009, ISBN 5-87317-565-9 , p. 435 ( limited preview in Google Book search).
  3. ↑ a b Houben-Weyl Methods of Organic Chemistry Vol. III, 2nd Edition Oxygen, Sulfur, Halogen Compounds . Georg Thieme Verlag, 2014, ISBN 3-13-199222-0 , p. 564 ( limited preview in Google Book search).
  4. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  5. ↑ Georg Lunge, Ernst Berl: Chemical-technical investigation methods . Springer-Verlag, 1905, ISBN 978-3-662-38269-1 , p. 1058 ( limited preview in Google Book search).