A substance added to a solvent to improve its properties e.g. by increasing the
solubility of an
extractant, changing interfacial parameters or reducing adsorption losses. Additives used to
enhance
extraction rates should be called accelerators or catalysts.
Source:
PAC, 1993, 65, 2373
(Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations
1993))
on page 2381