Thermodynamic property correlation of pure hydrogen fluoride

Empirical methods are proposed to correlate the thermodynamic properties of pure hydrogen fluoride. The methods hinge on the application of a multi-constant equation of state previously derived by the author, whose analytical form can be adapted to the complexity of the studied systems. The correlation of pure HF properties requires the application of the chosen EOS endowed with a number of empirical parameters which range from 8 to 11. Among the pure HF properties correlated in the full experimental range are: vaporization enthalpies, orthobaric densities of both liquid and vapor phases, the PVT data reported by Stromeier and Briegleb in the subcritical range and by Frank and Spalthoff in both in the subcritical and supercritical range up to 300 bars and 573 K. The method followed to insert the association models in the context of an EOS is also briefly discussed. (C) 2013 Elsevier B.V. All rights reserved.