crud

in solvent extraction
https://doi.org/10.1351/goldbook.C01423
A deposit or @[email protected] at the @[email protected] between two partially settled phases.
Notes:
  1. The phenomenon of crud formation arises from many causes and this definition does not imply any single one.
  2. Other terms -- some unprintable -- have been used but crud is the generally accepted term.
Source:
PAC, 1993, 65, 2373. (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2387 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: October 7, 2008