A thermal analysis study of methyl salicylate

The evaporation of methyl salicylate is studied using a simultaneous TG-DTA unit. The data are shown to be a zero order rate process. The activation e nergy calculated from the Kissinger and Ozawa methods as well as from the A rrhenius equations are shown to approximate the latent heat of vaporization calculated from the Clausius-Clapeyron equation. The activation energy val ues range from 52.5 to 60.4 kJ mol(-1) for the Kissinger method, 52.2-63.6 kJ mol(-1) for the Ozawa method and 47.2-50.3 kJ mol(-1) for the Arrhenius equation. (C) 2001 Published by Elsevier Science B.V.