Aqueous thermal degradation of gallic acid

Details Aqueous thermal degradation of gallic acid Aqueous thermal degradation of gallic acid

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988gecoa..52..341s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 52, Issue 2, pp.341-344

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Scientific paper

Aqueous thermal degradation experiments show gallic acid, a naturally occurring aromatic carboxylic compound, decomposes rapidly at temperatures between 105° and 150°C, with an activation energy of 22.9 or 27.8 kcal/ mole, depending on pH of the starting solution. Pyrogallol is the primary product identified, indicating degradation via decarboxylation and a carbanion transition state. Relatively rapid degradation of vanillic, phthalic, ellagic and tannic acids has also been observed, suggesting that these and perhaps other aromatic acids could be short-lived in deep formation waters.

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