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Dimethylamine is an organic compound with the formula (CH 3) 2 NH. This secondary amine is a colorless, flammable gas with an ammonia -like odor. Dimethylamine is commonly encountered commercially as a solution in water at concentrations up to around 40%.
For example, between 2010 and 2018, outputs of chemicals and their products in Indonesia, Malaysia, the Philippines, Singapore, Thailand, and Vietnam, increased in value by nearly 40 per cent from US$132 billion to US$181 billion. [5] Examples of such precursors and drugs made with them are listed below.
NDMA forms from a variety of dimethylamine-containing compounds, e.g. hydrolysis of dimethylformamide. Dimethylamine is susceptible to oxidation to unsymmetrical dimethylhydrazine, which air-oxidizes to NDMA. [15] In the laboratory, NDMA can be synthesised by the reaction of nitrous acid with dimethylamine: HONO + (CH 3) 2 NH → (CH 3) 2 NNO ...
N,N-DMPEA has been found to be safe for use as a flavoring agent by the Flavor and Extract Manufacturers Association (FEMA) Expert Panel [7] and also by the Joint Expert Committee on Food Additives (JECFA) [8] —a collaboration between the Food and Agricultural Organization of the United Nations (FAO) and the World Health Organization.
Lauryldimethylamine oxide (LDAO), also known as dodecyldimethylamine oxide (DDAO), is an amine oxide–based zwitterionic surfactant, with a C 12 (dodecyl) alkyl tail. It is one of the most frequently-used surfactants of this type. [4]
It is a colorless liquid that is widely available. It is prepared by the reaction of dimethylamine and formaldehyde: [1] 2 (CH 3) 2 NH + CH 2 O → [(CH 3) 2 N] 2 CH 2 + H 2 O. It is used for the dimethylaminomethylation reactions, the reaction being initiated by the addition of a strong, anhydrous acid: [2] [(CH 3) 2 N] 2 CH 2 + H + → (CH 3 ...
It undergoes directed ortho metalation with butyl lithium: [C 6 H 5 CH 2 N(CH 3) 2 + BuLi → 2-LiC 6 H 4 CH 2 N(CH 3) 2 LiC 6 H 4 CH 2 N(CH 3) 2 + E + → 2-EC 6 H 4 CH 2 N(CH 3) 2. Via these reactions, many derivatives are known with the formula 2-X-C 6 H 4 CH 2 N(CH 3) 2 (E = SR, PR 2, etc.).
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.