The liquid or homogeneous mixture of liquids in which extractant(s) and possible modifier(s) may be dissolved to form the solvent phase.
Notes: - The term @C00859@, which implies an @I03026@ diluent is not recommended.
- Although the diluent may well be a single liquid or even the major portion of the extracting phase, the term solvent should not be used in this sense as it has a much wider meaning in the context of @L03587@, although the term cosolvent may be used in certain circumstances.
- The diluent by itself does not extract the main (extractable) solute appreciably.
Source:
PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2380 (https://doi.org/10.1351/pac199365112373)