The thermodynamic properties of fluid near to and far from the critical point can be described by the classic mean-field equation-of-state with a correction based on renormalization group theory of fluid developed by White. This work used the parameter equation-of-state with the White’s recursion procedure to calculate the global vapor-liquid equilibrium properties of carbon dioxide and n-alkanes. Furthermore, the asymmetric properties of real fluids in critical loci were analyzed to test the validity of White’s RG theory in the subcritical region. Though the thermodynamic properties of vapor-liquid equilibrium are well predicted by White’s RG theory of fluid, the theory does not reproduce the vapor-liquid asymmetry in fluid criticality derived from the framework of “complete scaling”.

Key words: renormalization group theory, mean-field equation of state, vapor-liquid equilibrium, critical asymmetry