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  • 1 The University of Tennessee Department of Chemistry Knoxville TN 37996-1600 USA Knoxville TN 37996-1600 USA
  • | 2 Mettler-Toledo AG CH-8606 Greifensee Switzerland CH-8606 Greifensee Switzerland
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Abstract  

A new pressure DSC module (Mettler DSC27HP) and its abilities for vapor pressure determination in the range of subambient pressure to 7 MPa are presented. To compare the new to an established method, vapor pressures of caffeine, naphthalene and o-phenacetin have been determined both by pressure DSC and the Knudsen effusion cell method. These results, including the derived heats of evaporation and heats of sublimation, are compared to literature values.