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    Author(s): Zhan-Qian Song; Eugene Zavarin; Duane F. Zinkel
    Date: 1985
    Source: Journal of wood chemsitry and technology. Vol. 5, no. 4 (1985): pages 535-542.
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (65 KB)


    Changes in the composition of gum rosin during disproportionation in the presence of 5% palladium-on-charcoal have been determined by gas chromatography. The principal reaction product was dehydroabietic acid. The exocyclic vinyl group of the pimaric/isopimarictype resin acids was hydrogenated completely. Only a small amount of dihydroabietic acids was formed. Eight dihydro resin acids were identified. No tetrahydro resin acids were observed.

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    Song, Zhan-Qian; Zavarin, Eugene; Zinkel, Duane F. 1985. On the palladium-on-charcoal disproportionation of rosin. Journal of wood chemsitry and technology. Vol. 5, no. 4 (1985): pages 535-542.


    Charcoal, emulsifiers, palladium, resin acids, rosin, dehydroabeitic acid

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