1,6-dihydroxyanthraquinone

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Structural formula
Structure of 1,6-dihydroxyanthraquinone
General
Surname 1,6-dihydroxyanthraquinone
other names
  • Highest dioxyanthraquinone
  • 1,6-dihydroxy-9,10-anthracenedione
  • 1,6-dihydroxy-9,10-anthraquinone
Molecular formula C 14 H 8 O 4
Brief description

Orange-yellow needles

External identifiers / databases
CAS number 569-10-8
PubChem 12628831
Wikidata Q43686282
properties
Molar mass 240.21 g mol −1
Physical state

Firmly

Melting point
  • 276 ° C
  • 271-272 ° C
solubility

Easily soluble in ethanol , benzene , ammonia

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 .

1,6-Dihydroxyanthraquinone , also known as the highest dioxyanthraquinone , is an organic compound from the group of anthraquinones (more precisely the dihydroxyanthraquinones ).

presentation

The 1,6-dihydroxyanthraquinone can be produced by mixing nitroanthraquinone sulfonic acid with sodium hydroxide solution and methanol . It is heated several times and filtered (first with sulfuric acid , then with potassium hydroxide ). The 1,6-dihydroxyanthraquinone is then obtained with hydrochloric acid and benzene .

use

If the 1,6-dihydroxyanthraquinone is heated with potassium nitrate and sodium hydroxide solution under pressure, a precipitate is obtained after the addition of water and calcium chloride , which precipitates with hydrochloric acid and is washed with glacial acetic acid , thereby obtaining flavopurpurin with a yield of about 50 percent .

Individual evidence

  1. ↑ a b c d e f O. Frobenius, E. Hepp: About the 1.6-Dioxy-anthraquinone. In: Reports of the German Chemical Society . 40, 1907, pp. 1048-1051, doi: 10.1002 / cber.190704001157 .
  2. ^ Meyer, Hans: Detection and determination of organic compounds , Volume 2, Julius Springer, 1933, ISBN 978-3-662-37854-0 , p. 302.
  3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.