Hive Methods Discourse

	Main Index Search Register Login Who's Online FAQ Links
	Main Index Search Register Login Who's Online FAQ Links

	2 Online, 0 Active		You are not logged in

This is a historical archiveThe forum is read-only. Private information has been removed. It is not possible to login.

	Methods Discourse

All 5 posts Subject: Purification of GBL - > Help Please login to post Down

AquiAprender
(Stranger)
10-07-03 19:27
No 463240
      Purification of GBL - > Help

SWIM once talked about a bottle he had which contained both GBL(C4H602) and ethoxydiglycol (C6H14O3).

SWIM wanted to purify the GBL, getting rid of any ethoxydiglcol present. Strangely enough, SWIM was able to obtain an MSDS for this item, which stated the product is actually 100% GBL. But the bottle listed both ingredients. MSDS is old, and could be out of date, or item simply contains only trace amounts of ethoxydiglycol. SWIM isn't sure.

The boiling point of GBL and ethoxydiglycol are so close - is it even possible to use distillation to purify the GBL? Is there another way?

Suppose also that SWIM talked once about using the GBL + NaOH to create GHB. If there were trace amounts of ehoxydiglycol in this product, and it was used unpurified, what would happen? Would the end results be GHB plus unreacted ethoxydiglycol? Or would the ethoxydiglycol react with the NaOH?

SWIM is very new at this, and begs indulgence from those who know more about this...

Rhodium
(Chief Bee)
10-07-03 21:03
No 463256
User Picture       Ethoxydiglycol/GBL Separation

They cannot be separated by distillation, as the boiling point is so low. I'd suggest that you add 10% aqueous NaOH slowly until all the GBL present has been converted to NaGHB (solution pH 7-8), then you dilute this solution to twice its volume with water and wash out any remaining Ethoxydiglycol (it should be relativey inert to NaOH) by shaking repeatedly with a low-boiling non-polar solvent (diethyl ether or possibly dichloromethane), then finally you boil off 3/4 of the water to concentrate the GHB solution (and any remaining non-polar solvent will be carried away with it).

You probably do not need to worry about Ethoxydiglycol traces afterwards, as at least its toxicity seems to be fairly low: Diethylene Glycol Monoethyl Ether (Ethoxydiglycol ) Chemical Profile (http://www.intox.org/databank/documents/chemical/diglmee/cie65.htm)

AquiAprender
(Stranger)
10-08-03 17:37
No 463390
      Many thanks.

Thank you, Rhodium. SWIM will be very grateful for your help.

Chromic
(Synaptic Self-Mutilator)
10-08-03 23:36
No 463440
      My recommendation

Titrate with NaOH to convert the GBL to NaGHB, then under a water aspirator vacuum, distill off everything to dryness.

Now, it might be at a suitable purity to ingest... but if you want to make sure, reconvert to GBL using concentrated sulfuric acid, extract with DCM, distill off DCM then vacuum distill the GBL. (it may even be possible to distill GBL from the sulfuric acid.. might be a convenient time-saving step)

Rhodium
(Chief Bee)
10-09-03 20:40
No 463645
User Picture       That sounds like an even better idea.

That sounds like an even better idea.

	https://the-hive.archive.erowid.org	the-hive@erowid.org



Powered by Asperger's^TM Release 5.14, 2013 - 2017, Piggy's Worst Nightmare Ltd.
Links Erowid Rhodium

	All 5 posts		Subject: Purification of GBL - > Help		Please login to post		Down


		AquiAprender (Stranger) 10-07-03 19:27 No 463240				Purification of GBL - > Help
						SWIM once talked about a bottle he had which contained both GBL(C4H602) and ethoxydiglycol (C6H14O3). SWIM wanted to purify the GBL, getting rid of any ethoxydiglcol present. Strangely enough, SWIM was able to obtain an MSDS for this item, which stated the product is actually 100% GBL. But the bottle listed both ingredients. MSDS is old, and could be out of date, or item simply contains only trace amounts of ethoxydiglycol. SWIM isn't sure. The boiling point of GBL and ethoxydiglycol are so close - is it even possible to use distillation to purify the GBL? Is there another way? Suppose also that SWIM talked once about using the GBL + NaOH to create GHB. If there were trace amounts of ehoxydiglycol in this product, and it was used unpurified, what would happen? Would the end results be GHB plus unreacted ethoxydiglycol? Or would the ethoxydiglycol react with the NaOH? SWIM is very new at this, and begs indulgence from those who know more about this...



		Rhodium (Chief Bee) 10-07-03 21:03 No 463256				Ethoxydiglycol/GBL Separation
						They cannot be separated by distillation, as the boiling point is so low. I'd suggest that you add 10% aqueous NaOH slowly until all the GBL present has been converted to NaGHB (solution pH 7-8), then you dilute this solution to twice its volume with water and wash out any remaining Ethoxydiglycol (it should be relativey inert to NaOH) by shaking repeatedly with a low-boiling non-polar solvent (diethyl ether or possibly dichloromethane), then finally you boil off 3/4 of the water to concentrate the GHB solution (and any remaining non-polar solvent will be carried away with it). You probably do not need to worry about Ethoxydiglycol traces afterwards, as at least its toxicity seems to be fairly low: Diethylene Glycol Monoethyl Ether (Ethoxydiglycol ) Chemical Profile (http://www.intox.org/databank/documents/chemical/diglmee/cie65.htm)



		AquiAprender (Stranger) 10-08-03 17:37 No 463390				Many thanks.
						Thank you, Rhodium. SWIM will be very grateful for your help.



		Chromic (Synaptic Self-Mutilator) 10-08-03 23:36 No 463440				My recommendation
						Titrate with NaOH to convert the GBL to NaGHB, then under a water aspirator vacuum, distill off everything to dryness. Now, it might be at a suitable purity to ingest... but if you want to make sure, reconvert to GBL using concentrated sulfuric acid, extract with DCM, distill off DCM then vacuum distill the GBL. (it may even be possible to distill GBL from the sulfuric acid.. might be a convenient time-saving step)



		Rhodium (Chief Bee) 10-09-03 20:40 No 463645				That sounds like an even better idea.
						That sounds like an even better idea.

All 5 posts	End of thread	Top