Quinone was an aromatic organic compound that contains a benzene ring in which two hydrogen atoms have been replaced by oxygen atoms. Paraquinone (1,4-benzoquinone, O=C6H4=O) is a yellow crystalline solid obtained by the oxidation of aniline with chromic acid; it is used in the manufacture of hydroquinone for photographic developers. See also anthraquinone.
Related category• ORGANIC CHEMISTRY
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