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Reference Materials for Phase Equilibrium Studies. 1. Liquid-Liquid Equilibria (IUPAC Technical Report)



Ala Bazyleva, William E. Acree, Jr., Robert D. Chirico, Vladimir Diky, Glenn T. Hefter, Johan Jacquemin, Joe W. Magee, John P. O'Connell, James D. Olson, Ilya Polishuk, Kurt Schmidt, John M. Shaw, J. P. M. Trusler, Ronald D. Weir


This article is the first of three projected IUPAC Technical Reports resulting from IUPAC Project 2011-037-2-100 (Reference Materials for Phase Equilibrium Studies). The goal of that project was to select reference systems with critically evaluated property values for the validation of instruments and techniques used in phase equilibrium studies for mixtures. This Report proposes seven systems for liquid-liquid equilibrium studies, covering the four most common categories of binary mixtures: aqueous systems of moderate solubility, non-aqueous systems, systems with low solubility, and systems with ionic liquids. For each system, the available literature sources, accepted data, smoothing equations, and estimated uncertainties are given.
Pure and Applied Chemistry


Reference materials, Phase equilibrium, Liquid-liquid equilibrium, Instrument validation


Bazyleva, A. , Acree, W. , Jr., R. , Chirico, V. , Diky, G. , Hefter, J. , Jacquemin, J. , Magee, J. , O'Connell, J. , Olson, I. , Polishuk, K. , Schmidt, J. , Shaw, J. and Trusler, R. (2021), Reference Materials for Phase Equilibrium Studies. 1. Liquid-Liquid Equilibria (IUPAC Technical Report), Pure and Applied Chemistry, [online],, (Accessed April 15, 2024)
Created July 8, 2021, Updated October 14, 2021