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Topic: methylamine from ammonium chloride and methanol  (Read 10060 times)

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Offline peper

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methylamine from ammonium chloride and methanol
« on: September 20, 2013, 12:51:24 AM »
another question about methylamine..sorry if its annoying but this time i realy needed to ask.
it is possible to create methyl amine with ammonium chloride and methanol? i thought about it

heating up ammonium chloride with methanol,creating ammonia,hydrochloride and methanol gases
NH4Cl → NH3 + HCl

than the hydrochloride react with methanol.and in what i readed in wiki its working and even with or without a catalyst.
CH3OH + HCl → CH3Cl + H2O

and than the chloromethane is reacting with the ammonia gas to produce methylamine.i readed in wiki that the reaction between chloromethane and ammonia is used commercialy.

NH3 + CH3Cl → CH3NH2 + HCl

its also has many impurities like the methanol-ammonia reaction or it is more pure??.


what do you think?


Offline Hunter2

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Re: methylamine from ammonium chloride and methanol
« Reply #1 on: September 20, 2013, 12:57:27 AM »
The gas reaction would not work. The built up of the Ester (methyl chloride) will be disturbed by the base ammonia. The problem is, to separate HCl in the first reaction. Lets say, if you would  take half amount of Ammonia chloride and add sodium hydroxide and use the other half and add sulfuric acid you can obtain hydrochloric and ammonia separately. The other reactions what you wrote would work.
The last one would also create Di- and Tri-methyl amine beside Mono-methyl amine.
« Last Edit: September 20, 2013, 01:33:16 AM by Hunter2 »

Offline AlphaScent

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Re: methylamine from ammonium chloride and methanol
« Reply #2 on: September 20, 2013, 02:35:50 PM »
This seems sketchy to me.

Asking how to make methylamine?

Controlled substance people...
If you're not part of the solution, then you're part of the precipitate

Offline peper

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Re: methylamine from ammonium chloride and methanol
« Reply #3 on: September 20, 2013, 08:30:21 PM »
The gas reaction would not work. The built up of the Ester (methyl chloride) will be disturbed by the base ammonia. The problem is, to separate HCl in the first reaction. Lets say, if you would  take half amount of Ammonia chloride and add sodium hydroxide and use the other half and add sulfuric acid you can obtain hydrochloric and ammonia separately. The other reactions what you wrote would work.
The last one would also create Di- and Tri-methyl amine beside Mono-methyl amine.

aluminium chloride can replace the sulfuric acid in reacting with the ammonia gas? i readed her http://www.sciencedirect.com/science/article/pii/0955221995001689

that ammonia react with aluminium chloride to form AlCl3 · 6NH3 it is right?

Offline Archer

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Re: methylamine from ammonium chloride and methanol
« Reply #4 on: September 23, 2013, 11:30:34 AM »
Methylamine is commercially available as a solution in a variety of solvents, as a gas and as the solid hydrochloride. Why do you need to make it at all?

Most viable preparations of methylamine will produce unwanted bi-products which are extremely difficult to remove without specialised equipment.

If you have a legitimate use for it then share it with us and we may be able to offer an alternative to using this substance.
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