Estimation of Free Phenolic Groups in Lignin

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Communications Faculty of Sciences University Ankara Series B Chemistry and Chemical Engineering
Volume:15
Estimation of Free Phenolic Groups in Lignin

Estimation of Free Phenolic Groups in Lignin

Authors : Aral OLCAY

Pages : 0-0

View : 35 | Download : 5

Publication Date : 1968-01-01

Article Type : Research Paper

Abstract :A method has been developed for the determination of free phenolic groups in softwood lignin. It is based on the colour reaction occurring between 1-nitroso 2-naphthol and eugenol. The colour reaction of l-nitroso-2—naphthol with a variety of substances containing one or two guaiacyl nuclei insert ignore into journalissuearticles values(representing probable structural prmcipales of lignin); has been investigated. The number of free phenolic hydroxyls per methoxyl group in milled soft wood lignin was determined. Satisfactory agreement was obtained with results reported in the earlier literatüre.
Keywords : Estimation, Phenolic, Lignin

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