Chemical Thermodynamics and Thermal Analysis (Sep 2021)

Vapor pressure and thermophysical properties of explosive taggants

  • Vojtěch Štejfa,
  • Kateřina Kadlecová,
  • Květoslav Růžička,
  • Michal Fulem

Journal volume & issue
Vol. 3
p. 100020

Abstract

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Knowledge of the vapor pressure is one of the key parameters that determine the application of detection taggants for a given explosive and useful lifetime. The objective of this work was to determine the vapor pressures and thermodynamically linked properties of selected explosive taggants, namely 2,3-dimethyl-2,3-dinitrobutane, 2-nitrotoluene, and 4-nitrotoluene. Experimental studies included vapor pressure measurements using a static method, investigation of phase behavior by differential scanning calorimetry, and measurement of condensed-phase heat capacities. On the basis of the above-mentioned data and in combination with theoretically calculated ideal-gas thermodynamic properties, the recommended vapor pressure equations for the explosive taggants in a wide temperature range were developed by the method of simultaneous correlation of vapor pressures and thermodynamically linked properties.

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