Journal of Thermal Analysis and Calorimetry

, Volume 57, Issue 1, pp 225–234

The Vapour Pressure and the Enthalpy of Sublimation: Determination by inert gas flow method

  • Authors
  • X. Zielenkiewicz
  • G. L. Perlovich
  • M. Wszelaka-Rylik
Article

DOI: 10.1023/A:1010179814511

Cite this article as:
Zielenkiewicz, X., Perlovich, G.L. & Wszelaka-Rylik, M. Journal of Thermal Analysis and Calorimetry (1999) 57: 225. doi:10.1023/A:1010179814511

Abstract

A new device, based on the inert gas flow method, for measuring the vapour pressure and the determination of the enthalpy of sublimation in a wide range of temperatures (up to 573 K) is described in this paper. The limits of the flow rate as important experimental parameter were determined for the given instrument. The results of calibration showed a good precision and reproducibility of the measurements of the enthalpy of sublimation. The results of the determination of some derivatives of pyrimidine were presented.

2,4-diamino-6-hydroxypyrimidineenthalpy of sublimationinert gas flow method1-methyl-4N-methoxycytosine2,4,6-trihydroxypyrimidinevapour pressure

Copyright information

© Kluwer Academic Publishers 1999