Chemical industry portal


Product name quinizarin
Synonyms 1,4-dihydroxyanthraquinone
quinaldine red
GOST no data
CAS 81-64-1

Quinizarin is a orange-red crystalline compound. It is soluble in ethanol, diethyl ether, benzene and hot water. It has an only limited solubility in cold water. Quinizarin can be oxidized to form 1,4,9,10-anthradiquinone by led tetraacetate.


Commercially quinizarin is prepared by interaction of 4-chlorophenol with phthalic anhydride at 190-195°C. Reaction is catalyzed with solution of boric acid H3BO3 in 100% sulfuric acid or diluted oleum. Quinizarin is refined by sublimaton or recrystallization.


Quinizarin is an intermediate in making violet, green, blue dyestuff for wool, including indanthrene and alizarin derivatives.

Manufacturer(s) JSC Kemerovo Aniline and Dye Plant
Chemical structure of quinizarin

Find chemicals by name, GOST or CAS number

Russian version
Unauthorized copying, processing or reproduction of any and all information published on this website prohibited.
© 2000-2010 All rights reserved
Powered by CHEMINDUSTRY.RU group
Contact us