Room temperature ionic liquids as novel media for ‘clean’ liquid–liquid extraction

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Jonathan G. Huddleston, Heather D. Willauer, Richard P. Swatloski, Ann E. Visser and Robin D. Rogers


The partitioning of simple, substituted-benzene derivatives between water and the room temperature ionic liquid, butylmethylimidazolium hexafluorophosphate, is based on the solutes’ charged state or relative hydrophobicity; room temperature ionic liquids thus may be suitable candidates for replacement of volatile organic solvents in liquid–liquid extraction processes.


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