Abstract
The vapor pressure as a function of temperature and its vaporization enthalpy at T=298.15K of R-(+)-menthofuran, a substance metabolically derived from R-(+)-pulegone that is both a flavoring agent at low concentrations and a hepatotoxin at larger ones, is evaluated by correlation-gas chromatography. A vapor pressure p/Pa=(36±12) has been evaluated at T=298.15K, and a normal boiling temperature of Tb/K=482.4K is predicted. A boiling temperature of Tb/K=374.3 compares with the literature value of Tb/K=371.2 at reduced pressure, p/kPa=2.93. The vaporization enthalpy of (56.5±3.0)kJ·mol−1 compares to an estimated value of (57.8±2.9)kJ·mol−1.
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