Ethanolamine


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ethanolamine

[‚eth·ə′näl·ə‚mēn]
(organic chemistry)
NH2(CH2)2OH A colorless liquid, miscible in water; used in scrubbing hydrogen sulfide (H2S) and carbon dioxide (CO2) from petroleum gas streams, for dry cleaning, in paints, and in pharmaceuticals.

Ethanolamine

 

any of three amino alcohols with the general formula RR′NCH2CH2OH—namely, monoethanolamine (also known as colamine; R = R′ = H), diethanolamine (R = H, R′ = CH2CH2OH), and triethanolamine (R = R′ = CH2CH2OH). These three alcohols have boiling points of 171°, 271°, and 360°C and densities (at 20°C) of 1.0179, 1.0919, and 1.1258 g/cm3, respectively.

Ethanolamines are usually produced by reacting concentrated ammonia with ethylene oxide and fractionating the mixture to separate the three types of ethanolamines. All three are viscous, hygroscopic liquids that readily dissolve in water, ethanol, and chloroform. They are weak bases. Monoethanolamine and diethanolamine are used as easily regenerated absorbing agents for acidic gases, such as carbon dioxide, sulfur dioxide, and hydrogen sulfide. Triethanolamine is used as an inhibitor of corrosion and an antifreeze additive. Upon reaction with aliphatic carboxylic acids, ethanolamines yield surfactants (emulsifiers and detergents). Ethanolamines are also used for softening and finishing leather, and they serve as intermediates in the synthesis of drugs, insecticides, and preservatives. Certain derivatives of ethanolamines are common in nature; choline is one example.

References in periodicals archive ?
Metabolite Experimental Reference model Lactate, alanine, acetate, Equine 32 N-acetylglucosamine, citrate, creatine/creatinine, glycerol, HDL choline, and [alpha]-glucose Glycerol and hydroxybutyrate Canine 34 Glycine, serine, creatine, choline Ovine 36 hydroxyproline, creatine and proline 4-methyl-2-oxopenthanoate Human 41 O-acetylcarnitine, hexanoylcarnitine, N-phenylacetylglycine and ethanolamine Arabitol, glucose, galactose (OA KL1); Human 50 [beta]-alanine, pyruvate, terephalate (OA KL2) HDL: high-density lipoprotein; OA: osteoarthritis; KL: Kellgren Lawrence classification of osteoarthritis.
Enzymatic degradation of these endocannabinoids yields arachidonic acid and ethanolamine from AEA and glycerol from 2-AG, respectively (20).
Table-4: Amidation yield of ethanolamine with conventional vs.
Reactive vascular lesions treated using ethanolamine oleate sclerotherapy.
Phospholipids have also been implicated in creating the charge on the plasma membrane with sphingomyelin, phosphatidyl choline and phosphatidyl ethanolamine being neutral and phosphatidyl inositol, phosphatidyl serine and cardiolipin possessing a net negative charge.
A soy intermediate composed of a mixture of mono-hydroxyl functional soy derivatives was first prepared by reacting soybean oil with mono-hydroxyl functional amines such as ethanolamine.
Some lipids are produced as a compensatory mechanism and they fulfill a protective role, such as c16-ceramide, PS, sphingomyelin (SM), phosphatidyl ethanolamine (PE), and phosphatidylethanol.
DH is an ethanolamine group H1 antagonist with central nervous system (CNS) depressant, anticholinergic, antiemetic, antihistamine, and local anesthetic effects.
Salmeterol thus consists of a polar, or hydrophilic, phenyl ethanolamine "head," with a large lipophilic "tail" or side chain.
It also possesses phenyl ethanolamine which actually improves our mood.
5% phenol, portwine, quinine, urethane, 3% STDS, ethanolamine oleate, talc, antazoline, polidacanol and of late tetracycline with varied results.