The Vaporization Enthalpy and Vapor Pressure of (±) <i>N</i>-Ethyl Amphetamine by Correlation Gas Chromatography

Abstract

The vaporization enthalpy, and vapor pressure as a function of temperature of N-ethylamphetamine, a substance used in the 1950s as an appetite suppressant and more currently abused as a designer drug, is reported. Its physical properties are compared to those of S (+)-N-methamphetamine, a substance whose physiological properties it mimics. A vaporization enthalpy of (62.4 ± 4.4) kJ·mol−1 and vapor pressure of (19 ± 11) Pa at T = 298.15 K has been evaluated by correlation gas chromatography. Results are compared to estimated values and to the limited amount of experimental property data available.

Keywords

• <i>N</i>-ethylamphetamine
• S (+)-methamphetamine
• vaporization enthalpy
• vapor pressure
• correlation gas chromatography