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penner
(Stranger) 05-27-03 14:11 No 435926 |
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gbl extraction? | Bookmark | |||||
there is a liquid which contains gbl, Methylpyrrolidon, and Dimethylester. i think the Dimethylester is a substace which is in german called "Maleinsäuredimethylester" i want to know more about these substaces and how to extract the glb from this liquid? |
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Rhodium (Chief Bee) 05-27-03 19:34 No 435983 |
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Separation of GBL and NMP | Bookmark | |||||
Separation of GBL and NMP (N-methylpyrrolidinone) has been discussed before, plug in a few of these synonyms in TFSE and see for yourself. |
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penner (Stranger) 05-28-03 03:46 No 436062 |
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and whats about the Dimethylester? | Bookmark | |||||
and whats about the Dimethylester? |
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cublium (Stranger) 05-28-03 06:47 No 436083 |
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Maleic acid dimethyl ester maybe? | Bookmark | |||||
Maleic acid dimethyl ester maybe? |
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Rhodium (Chief Bee) 05-29-03 23:37 No 436497 |
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NMP/GBL/dimethylmaleate separation | Bookmark | |||||
The same thing holds true for NMP as for dimethylmaleate - after complete hydrolysis to the free acids, only the GHB re-esterifies with ease in a slightly acid aqueous solution, forming GBL (which can then be steam distilled off), while the amino-acid from NMP and the maleic acid stays in their acid form and will be pretty non-volatile. |
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evoh_1 (Stranger) 05-29-03 23:39 No 436498 |
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wrong forum | Bookmark | |||||
this should be in another forum |
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Rhodium (Chief Bee) 05-29-03 23:49 No 436503 |
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misinforming? | Bookmark | |||||
Oh, would you care to tell the audience which forum the extraction of GBL from a cleaning mixture should be placed, if not in Chemicals & Equipment - Construction of lab equipment, sourcing and extraction of chemicals |
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armageddon 08-08-04 13:16 |
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esterification
(Rated as: insignificant (this thread is over 1 year old)) |
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armageddon (Hive Bee) 08-09-04 14:44 No 524481 |
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sorry - but you asked for it! | Bookmark | |||||
You specifically asked for the reason why some bee thought the discussed topic belonged elsewhere - and I thought since nobody replied during the last few months, I would be allowed to post my opinion about the subject... ![]() In case it was irony; why didn't you use a smiley then? (Post 462395 (Rhodium: "The last part is incorrect.", Chemicals & Equipment) Anyway: if you think a thread is too old to take up any more useful information - why don't you just close it?? A (at the risk of getting bad karma again ![]() Pleased to meet you hope you get my name. But whats puzzlin you is the nature of my game! |
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