methylaminen.
/mᵻˈθʌɪləmiːn/, /ˌmiːθʌɪlˈeɪmiːn/, /ˌmɛθɪlˈeɪmiːn/, /ˈmɛθɪləmiːn/, U.S. /ˈmɛθələˌmin/, /ˌmɛθəlˈæmˌin/ Chemistry.
Each of the three compounds that can be formed by replacing one or more of the hydrogen atoms in ammonia with a methyl group or groups; esp.CH3NH2 (monomethylamine), a colourless, flammable gas with a fishy or ammonia-like odour.
ΚΠ
1850 Philos. Trans. (Royal Soc.) 140 97 Aniline, methylamine, ethylamine, amylamine, when considered as amidogen-compounds, belong to this group.
1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 596 Methylamine nitrate.
1897 T. C. Allbutt et al. Syst. Med. II. 788 From decomposing fish..methylamine..cadaverine and putrescine were extracted.
1898 T. C. Allbutt et al. Syst. Med. V. 35 Methylamin, ammonia and sulphuretted hydrogen are also found [in the sputum of fetid bronchitis].
1936 H. G. Rule tr. J. Schmidt Text-bk. Org. Chem. (ed. 3) 166 Methylamine, CH3.NH2, is found in mercurialis perennis and is prepared by Hofmann's method.
1964 N. G. Clark Mod. Org. Chem. xii. 245 The methylamines are manufactured in a continuous methylation process involving methanol and ammonia over an alumina catalyst at 400° and 100 atmospheres pressure.
1970 R. W. McGilvery Biochemistry xx. 485 It may be that this accounts for the small amounts of methylamines normally found in urine.
1988 BioFactors 1 95/1 The disproportionation of formate, methanol, methylamines and acetate to CO2 and methane.
2000 Jrnl. Molecular Catalysis B 8 37 Methylotrophic bacteria are capable of growth using reduced one-carbon compounds like methanol or methylamine as free energy sources.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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