Abstract
Thermodynamics of phase transitions of long-chain linear alcohols were revised by means of complementary experimental techniques: transpiration, differential scanning calorimetry (DSC), fast scanning calorimetry (FSC), and solution calorimetry (SC). Absolute vapor pressure temperature dependencies for heptadecanol-1 and octadecanol-1 were measured by the transpiration and FSC methods. The validity and accuracy of the FSC experimental setup towards reliable vapor pressure measurement was established. It was shown that vaporization enthalpies for heptadecanol-1 and octadecanol-1 obtained by FSC and transpiration method are in good agreement. The SC approach was used for estimation of sublimation/vaporization enthalpies of linear alcohols. Energetics of the phase transitions found with the SC-approach agree well with that from conventional methods and they are consistent with each other.
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