cal
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Transmethylation of ammonium methyl sulphate to methylammonium sulphate
| Quote: | J. Chem. Soc. 105, 2762-2769 (1914)
In a recent communication (this vol., p. 925) containing an account of the study of the decomposition by heat of the methyl sulphates of certain
carbamides, it was pointed out that ammonium methyl sulphate can evidently undergo isomeric change when heated, in accordance with the equation:
NH4-MeSO4 = NH3Me-HSO4
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I find this reaction to produce Methylamine HCL the simplest of all reactions I have tried. It is a straight forward reaction between Methanol and
Sulfuric Acid then Treated with Ammoniu m Carbonate to produce Ammonium Methyl
Sulfate, which upon heating gives Methylamine Gas and Sulfuric Acid. I do not believe it can be any simpler.
<sub>Edit by Nicodem:
The several pages of the copy-pasta and all its unreadable formating and OCR errors were removed. Those interested should check the article (DOI: 10.1039/CT9140502762; the full text will soon be in the References anyway).
Cal, your next autistic copy-pasta thread will be sent to Detritus. Either do things properly or just don't waste our time. This forum is not a waste
bin.</sub>
[Edited on 5/3/2012 by Nicodem]
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bfesser
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Copy pasta? Perhaps uploading a short summary or the abstract along with a PDF or DOI link would be easier to read.
<a href="http://www.sciencemadness.org/talk/viewthread.php?tid=19098#pid239616">[reference requested]</a>
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Sedit
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This reaction has been talked about in the methylamine thread. When I am at my computer I will provide a link.
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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GreenD
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Sorry I've never salted anything out.
Would bubbling the produced gas in Conc. HCl give you the respective salt?
ʃ Ψ*Ψ
Keepin' it real.
Check out my new collaborated site: MNMLimpact.com
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cal
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Quote: Originally posted by GreenD  | Sorry I've never salted anything out.
Would bubbling the produced gas in Conc. HCl give you the respective salt? |
Yes it does.
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UnintentionalChaos
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We've already discussed this. Please use a search beforehand. Furthermore, the product is methylammonium bisulfate. I have tried this myself and
mostly got a lot of gas loss (reportedly ethylene byproduct. It didn't reek enough to be methylamine, though a small amount was undoubtedly present ).
Yield is probably poor at best.
Refluxing sulfamic acid in methanol gives ammonium methylsulfate in a much more straightforward manner.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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