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N-Methylmethanimine or N‐methyl methylenimine is a reactive molecular substance containing a methyl group attached to an imine. It can be written as CH 3 N=CH 2 . On a timescale of minutes it self reacts to form the trimer trimethyl 1,3,5-triazinane.
[7] [8] Doses of methenamine of up to 10 to 20 g/day have also been studied and found to be tolerable without major toxicity. [7] When methenamine was first introduced in the late 1800s and early 1900s, doses of 15 to 30 g per day were commonly employed and doses of up to 60 to 180 g per day were tried in some cases. [ 42 ]
Methylamine has been produced industrially since the 1920s (originally by Commercial Solvents Corporation for dehairing of animal skins). [4] This was made possible by Kazimierz Smoleński [] and his wife Eugenia who discovered amination of alcohols, including methanol, on alumina or kaolin catalyst after WWI, filed two patent applications in 1919 [5] and published an article in 1921.
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Structural parameters determined by microwave spectroscopy include a C=N bond length of 1.27 Å, an N–H bond length of 1.02 Å and an H−N=C bond angle of 110.5°. [2] Because unhindered imines polymerize or oligomerize when concentrated, methylene imine has not been isolated as a liquid or bulk solid.
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2-CH 3 is 10.73, a value above methylamine (10.64) and trimethylamine (9.79). Dimethylamine reacts with acids to form salts, such as dimethylamine hydrochloride, an odorless white solid with a melting point of 171.5 °C. Dimethylamine is produced by catalytic reaction of methanol and ammonia at elevated temperatures and high pressure: [6]