Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Fundamental Equation of State for Vinyl Chloride



Monika Thol, Florian Fenkl, Eric W. Lemmon


A fundamental equation of state in terms of the Helmholtz energy is presented for vinyl chloride. Due to its fundamental nature, it can be used to consistently calculate all thermodynamic state properties in the fluid region. Based on the underlying experimental database, it is valid from the triple-point temperature 119.31 K to 430 K with a maximum pressure of 100 MPa. In addition to the accurate reproduction of experimental data, correct extrapolation behavior during the development of the equation was attained. This enables the equation to be applied in modern mixture frameworks.
International Journal of Thermophysics


vinyl chloride, equation of state, Helmholtz energy, thermodynamic properties


Thol, M. , Fenkl, F. and Lemmon, E. (2022), A Fundamental Equation of State for Vinyl Chloride, International Journal of Thermophysics, [online],, (Accessed April 13, 2024)
Created January 10, 2022, Updated November 29, 2022