Erklärung: I think this is the term you are looking for...
Beispielsätze:
The process of extracting from a particular phase, to either make sure you get all the targetorganic out (example 1) or to make sure you remove all of an undesired contaminant (example 2) isoften referred to as “washing”.
the carboxylic acid was “washed out” of the ether...
The translation workplace 
