Arce Arce, AlbertoArce Ceinos, AlbertoRodríguez Figueiras, Óscar2022-03-182022-03-182021J. Chem. Eng. Data 2022, 67, 1, 286–2960021-9568http://hdl.handle.net/10347/27683The intention of this article is to clarify some concepts and relevant aspects of the experimental determination and treatment of liquid–liquid equilibrium data for ternary systems. Distinction is made between solubility curve and binodal curve, setting the stability limit which is defined by the spinodal curve. In addition, it is recommended to carry out the equilibrium data correlation using semiempirical models with a thermodynamic base, over the use of empirical equations. Moreover, the misuse of these empirical equations (Hand, Bachman, Othmer-Tobias, etc.) as proof of data quality or consistency is clarifiedeng© 2021 American Chemical Society. This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/deed.en)Atribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/MixturesLiquidsEquilibriumLiquid liquid equilibriumMoleculesjournal article10.1021/acs.jced.1c007781520-5134open access