Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Enthalpies of vaporization at T = 298.15 K of cis and trans-whiskey lactone have been evaluated by correlation gas chromatography to be (68.4 +- 1.7) kJ mol 1 and (67.5 +- 1.7) kJ mol 1, respectively. The enthalpies of vaporization of isomintlactone and mintlactone also evaluated by correlation gas chromatography have been found to have vaporization enthalpies of (74.2 +- 1.8) kJ mol 1 and (73.2 +- 1.8) kJ mol 1 respectively. The vapor pressures for cis and trans-whiskey lactone at T = 298.15 K have been evaluated as (1.5 +- 0.09) Pa and (2.0 +- 0.1) Pa using vapor pressures of a series of lactones as standards. Vapor pressures for isomintlactone and mintlactone were evaluated as (0.26 +- 0.012) Pa and (0.33 +- 0.02) Pa, respectively. Fusion and sublimation enthalpies for (+)-isomintlactone as well as the vapor pressure of the solid have been estimated.