The Vespiary

The Hive => Chemistry Discourse => Topic started by: Swift on April 28, 2002, 05:57:00 PM

Title: Separate GBL from propionic acid?
Post by: Swift on April 28, 2002, 05:57:00 PM

Can GBL be extracted from a solution of GBL/propionic acid? SWIM would like to do a solvent extraction, not distillation.

Title: gbl extraction
Post by: Rhodium on April 28, 2002, 06:39:00 PM

Do you know the exact proportions of propionic acid/GBL in the mix? I would add an equimolar amount (calculated in the propionic acid) of cold aqueous sodium bicarbonate to the chilled mixture (to form aqueous sodium propionate without disturbing the GBL, and then extract the GBL with a non-toxic non-polar solvent.

Title: (empty)
Post by: Swift on April 28, 2002, 08:55:00 PM

Swim is sorry, the solution is gbl/ethyl3-ethoxypropionate...not propionic acid, and no swim doesnt know the proportions of the two because it is an otc product and they are not given.

Title: UTFSE
Post by: Rhodium on April 28, 2002, 11:14:00 PM

Oh, then use the search engine, this has been discussed before.