extraction coefficient [obsolete]

https://doi.org/10.1351/goldbook.E02303
This term is not recommended as a synonym for @D01817@.
Sources:
Orange Book, 2nd ed., p. 89 [Terms]
PAC, 1993, 65, 2373. (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2382 [Terms] [Paper]