dimethylamine

[‚dī¦meth·əl′am‚ēn]

(organic chemistry)

(CH₃)₂NH Flammable gas with ammonia aroma, boiling at 7°C; soluble in water, ether, and alcohol; used as an acid-gas absorbent, solvent, and flotation agent, in pharmaceuticals and electroplating, and in dehairing hides.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Dimethylamine

a secondary acyclic amine, (CH₃)₂NH; a colorless gas with a sharp, unpleasant odor. Upon cooling it condenses readily to a colorless liquid. Melting point, −92.2°C; boiling point, 6.9°C. It is soluble in water and organic solvents; with acids it yields crystalline salts and undergoes acylation, alkylation, and nitrosation. It is formed upon putrefaction of proteins.

In industry, dimethylamine is prepared (with an admixture of trimethylamine) from methanol and ammonia, as well as from formaldehyde and ammonium chloride. It is used in organic synthesis (the Mannich reaction) to produce medicinal preparations (dicain, chlorpromazine, and so on), rocket fuel (dimethylhydrazine), and vulcanization accelerators.

Mentioned in

References in periodicals archive

The natural occurrence of formaldehyde in fish, which might form as a result of the enzymatic breakdown of TMAO to FA and dimethylamine (DMA), also elevates the activity of other microorganisms in the fish [4, 8, 35].

Risk Assessment of Kumasi Metropolis Population in Ghana through Consumption of Fish Contaminated with Formaldehyde

The products dimethylamine and formaldehyde are then susceptible to form both intra- and intermolecular crosslinks with protein side chains.

Effect of Freezing on the Shelf Life of Salmon

First, the material was defrosted and embedded in T208 resin (Cristal[R], styrene monometer, MEK TGDM 50 catalyst and dimethylamine) in a proportion suitable for hardening for approximately three minutes.

Histological and Morphometric Characteristics of the Corneal Layer of Buffalo Hoof Capsules/ Caracteristicas Histologicas y Morfometricas de la Capa Cornea de las Capsulas del Casco de Bufalo

[11] investigated the hydrothermal conversion of PEN in aqueous amine (methylamine, dimethylamine, and trimethylamine) solution, and demonstrated that the total yields of both monomers with trimethylamine (97.2%) were higher than those with methylamine (86.6%) and dimethylamine (89.8%).

Depolymerization of Polyethylene naphthalate) in Fused Silica Capillary Reactor and Autoclave Reactor from 240 to 280[degrees]C in Subcritical Water

Classes of compounds detected by the NMR method included amino acids (alanine, asparagine, arginine, cysteine, glycine, glutamate, glutamine, homoserine, isoleucine, leucine, lysine, methionine, phenylalanine, sarcosine, serine, threonine, tyrosine, taurine, valine); alcohols (methanol and glycerol); ketones and fatty acid by-products (acetoacetate, acetate, 3-hydroxybutyrate, acetone, pyruvate, isobutyrate); sugar (glucose); other small molecule intermediates (o-phosphocholine, choline, n,n-dimethylglycine, citrate, creatine, lactate, methylhistidine, succinate, myo-inositol, dimethylamine, methylsuccinate, and 2-hydroxyisobutyrate).

Serum metabolomic profiles in neonatal mice following oral brominated flame retardant exposures to hexabromocyclododecane (HBCD) alpha, gamma, and commercial mixture

Dimethylamine ([greater than or equal to]99.8%), allyldimethylamine (>99.0%), allyl chloride (>99.8%), allyl alcohol (>99.5%), and allyl aldehyde (>99.0%) were purchased from Sigma-Aldrich (USA).

Quantitative Analysis of Volatile Impurities in Diallyldimethylammonium Chloride Monomer Solution by Gas Chromatography Coupled with Liquid-Liquid Extraction

[55] Citrate, glutamine, acetone, pyruvate, [beta]-hydroxyisobutyrate, acetoacetate, histidine, dimethylamine, and creatinine had a high diagnostic accuracy for the discrimination of AIH from PBC.

Metabonomics Research Progress on Liver Diseases

to short-term 2, 4-D, dimethylamine and endosulfan exposure.

Assessment of mercury toxicity on cultured chlorella vulgaris

Asymmetric dimethylarginine (ADMA) is an endogenous inhibitor of nitric oxide (NO) synthase, produced by methylation of specific arginine residues of certain cellular proteins and released when hydrolysis of these proteins occurs.1,2 It is eliminated from the body by renal excretion (20%) and also metabolised (80%) by hydrolytic degradation to citrulline and dimethylamine (DMA) by the enzymatic action of dimethylarginine dimethylaminohydrolase (DDAH).3,4 Increased concentration of ADMA will compete with L-arginine to be transported into the endothelial cells leading to decreased synthesis of NO and endothelial dysfunction.5-7

Asymmetrical dimethyl arginine in type 2 diabetic patients with coronary artery disease