The vapor pressures and vaporization enthalpies of the three major components of bergamotene oil have been evaluated by correlation gas chromatography. Three major components were identified by GCMS as E beta-caryophyllene, trans alpha-bergamotene and alpha-humulene. Two of the components, E beta-caryophyllene and alpha-humulene were also evaluated using commercial caryophyllene samples. Z-caryophyllene, present in the commercial sample was also evaluated. Two sets of hydrocarbon standards, n-alkanes and a series of relatively unrelated cyclic compounds that included adamantane and two alkyl derivatives, (-) alpha-pinene, diamantane and 1,4-di-t-butylbenzene, were used. Vaporization enthalpies of the targets at T = 298.15 K were reproduced within the specified uncertainties by both sets of standards as were vapor pressures from T = (298.15 to similar to 400) K. Above 400 K, vapor pressures diverged. Equations for the evaluation of vapor pressure as a function of temperature are reported for all four compounds investigated. (C) 2018 Published by Elsevier Ltd.