separation factor, \(\alpha_{\text{A,B}}\)

in liquid-liquid distribution
The ratio of the respective distribution ratios of two extractable solutes measured under the same conditions. \[\alpha_{\text{A,B}} = \frac{D_{\text{A}}}{D_{\text{B}}}\]
  1. By convention the solutes designated as A and B in the above are chosen so as to make \(\alpha > 1\).
  2. The term @[email protected] is not recommended.
  3. The terms @[email protected] @[email protected] and @[email protected] are not synonymous and should not be used.
PAC, 1993, 65, 2373. (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2386 [Terms] [Paper]
See also:
Orange Book, 2nd ed., p. 85 [Terms] [Book]