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Journal of Physical and Chemical Reference Data -- December 2003 -- Volume 32, Issue 4, pp. 1707-1711
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Vapor Pressure and Critical Point of Tritium Oxide
- H. W. Xiang
- Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Zhong Guan Cun, Haidian, Beijing 100080, China
(Received 28 August 2002; revised 18 December 2002, accepted ; accepted 3 February 2003; published online 20 November 2003)
A simple general corresponding-states principle has been developed to represent the vapor pressure of tritium oxide from its triple point to its critical point, to describe the available experimental data, and to extrapolate beyond their range. This work takes advantage of the adoptions of the ITS-90 temperature scale and of the new critical parameters obtained from the extended corresponding-states principle. The vapor pressure data are described within their scatter in the entire temperature range. Comparisons with the available experimental data show that the extended corresponding-states principle for vapor pressure can calculate values with good accuracy. The substance-dependent characteristic parameters are given, such as critical temperature, critical density, critical pressure, and acentric factor. The values of the pressures, along with their first and second derivatives, as a function of temperature over the entire region from the triple point to the critical point are tabulated and recommended for scientific and practical uses. ©2003 American Institute of Physics.
doi:10.1063/1.1565352
PACS:
64.70.Fx, 05.70.Jk, 82.60.-s
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