Citation:

Baughman, G. AND E. Weber. TRANSFORMATION OF DYES AND RELATED COMPOUNDS IN ANOXIC SEDIMENT: KINETICS AND PRODUCTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/116 (NTIS PB94155553), 1994.

Description:

The reactions of several azo, anthraquinone, and quinoline dyes were studied in settled sediments. everal 1-substituted anthraquinones were lost from sediment with half-lives less than 10 days. For monosubstituted 1-amino and 1-methylamino (Disperse Red 9) compounds, the most stable product is the intramolecularly hydrogen-bonded anthrone. he 1,4-diaminoanthraquinone (Disperse Violet 1) and 1,4-diamino-2-methoxyanthraquinone (Disperse Red 11) were lost without formation of detectable products except for a demethylation product of the latter. oth the anthrone from Disperse Red 9 and the demethylation product of Disperse Red 11 reacted with half-lives of a few months, but other products were not detected. n azo dye, (Solvent Red 1) and a quinoline dye (Solvent Yellow 33) were transformed with half-lives of a few days and months, respectively. he azo dye reacted by reductive cleavage of the azo bond.

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