Comparative Synthetic Study of 1,4-Dihydroxy Anthraquinone (Quinizarin) Dye Intermediate

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Title:	Comparative Synthetic Study of 1,4-Dihydroxy Anthraquinone (Quinizarin) Dye Intermediate
Authors:	KHALID PERVEZ BHATTI MUHAMMAD ZUBER
Issue Date:	27-Oct-2011
Publisher:	HEJ Research Institute of Chemistry, University of Karachi, Karachi.
Citation:	Bhatti, K. P., & Zuber, M. (2011). Comparative Synthetic Study of 1, 4-Dihydroxy Anthraquinone (Quinizarin) Dye Intermediate. Journal of the Chemical Society of Pakistan, 33(5), 758-763.
Abstract:	1,4-Dihydroxy anthraquinone (quinizarin) has been synthesised with two different precursors’ p-chlorophenol and hydroquinone by condensation of phthalic anhydride. It has been noticed that p-chlorophenol gave higher yield as compared to hydroquinone on reaction with phthalic anhydride at 200°C within 3:30 hours in a mixture of concentrated H₂SO₄ and boric acid. Three disperse dyes have been prepared from the quinizarin. The physical properties of three different colored dyes have also been discussed.
URI:	http://142.54.178.187:9060/xmlui/handle/123456789/19829
ISSN:	0253-5106
Appears in Collections:	Issue 05

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