two-phase aqueous partition

https://doi.org/10.1351/goldbook.10223
Distribution in a biphasic system formed by two aqueous solutions containing structurally incompatible components (two polymers or a polymer and a salt) above a critical concentration.
Source:
PAC, 2016, 88, 517. (Glossary of terms used in extraction (IUPAC Recommendations 2016)) on page 536 [Terms] [Paper]