Related Experiment Video
Updated: Mar 7, 2026

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems
Published on: January 24, 2014
Vapor-Liquid Equilibrium of Carbon Dioxide With Isobutane and n-Butane: Modified Leung-Griffiths Correlation and Data
James C Rainwater1, Hepburn Ingham1, John J Lynch1
1National Institute of Standards and Technology, Boulder, CO 80303.
Abstract:
The Leung-Griffiths model as modified by Moldover and Rainwater is used to correlate high-pressure vapor-liquid equilibria of mixtures of carbon dioxide with n-butane and isobutane. Model correlations are compared against 10 independent experimental sources for these mixtures. Agreement is generally very good and comparable to mutual experimental discrepancies. The utility of the model as a data evaluation technique is demonstrated in that small suspect regions have been identified in certain data sets and the model predictions have been confirmed by subsequent measurements that agree with the model better than the earlier data.
Related Concept Videos
Distillation: Vapor–Liquid Equilibria
Phase Diagrams
Molecular Comparison of Gases, Liquids, and Solids
Vapor Pressure
Conformations of Butane
Nonideal Two-Component Liquid Solutions

