Proofs for the Occurrence of Homoprotocatechuic Acid and some Other Pyrocatechol and Guaiacol Derivatives in Pressure Heated Cellulose Spent Liquors.

Publisher Website
Google Scholar
Abstract
Mixed melting point determinations on crystalline substances or their crystalline derivatives obtained from sodium sulfide enriched pressure heated spent kraft or sulfite liquors have yielded proofs for the occurrence of the following substances: guaiacol, pyrocatechol, p-methylcatechol, p-ethylcatechol, acetovan-illone, vanillin, protocatechualdehyde, p-acetopyrocatechol, vanillic acid, and homoprotocatechuic acid. For the separation of the ketonic substances from the aldehydic ones a technique of stepwise acidification of an aqueous solution containing the Girard-P-derivatives of these substances was used.

This publication has 1 reference indexed in Scilit: