A correlation gas chromatographic study of the vaporization enthalpies and vapor pressures of patchoulol and 2-tetradecanol and estimations of their sublimation properties

Abstract

The vaporization enthalpy and vapor pressure near ambient temperatures of patchoulol, present in patchouli oil, are evaluated by correlation gas chromatography. Additionally, the vaporization enthalpy of 2-tetradecanol, used initially as a standard is also evaluated using a series of 1-alkanols. While the vaporization enthalpy evaluated differs from the literature value, the vapor pressures of 2-tetradecanol are found to be in good agreement with the literature over a broad range of temperatures. Fusion enthalpies of both of these low melting substances are estimated and used to calculate their sublimation enthalpies and vapor pressures at T = (Tfus and T = 298.15) K. The results are compared to available literature data, most of which was also estimated. Agreement with existing literature values is quite good.