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 ?
For five process chemicals (benzotriazole, sodium gluconate, ethanolamine, sulfamic acid, and chloroparaffin), moisture level was not a significant factor, because there was a significant increase in TAN without a significant increase in moisture level when the initial chemical concentration changed from 0.1% to 1.0%, while for sodium paratoluene sulfonate both the moisture level and the TAN remained unchanged with the change in the chemical concentration.
What is less well appreciated is that COX enzyme also metabolizes endocannabinoids to prostaglandin-glycerol esters for 2-AG and prostaglandin ethanolamines for AEA, as shown in Figure 2.
Mothsra, N-Acylation of Ethanolamine Using Lipase: A Chemoselective Catalyst, Beilstein J.
Reactive vascular lesions treated using ethanolamine oleate sclerotherapy.
Phospholipids contain high levels of PUFA with phosphatidyl ethanolamine, phosphatidyl choline and phosphatidyl serine functioning as important constituents of cell membranes [43].
The residual activated surface sites, which did not react with antibodies, were inactivated or blocked with 0.2 M ethanolamine. The RBC samples from standard A, B, and O cells were detected on the immobilized antibody by observing the change in the refractive index on the LR-SPR biosensor.
Ethanolamine Interconversion to Other Biomolecules.
In addition, S1P is irreversibly degraded by S1P lyase (SPL), which cleaves S1P at the C2-3 carbon-carbon bond, yielding two products, ethanolamine phosphate and the long-chain aldehyde trans-2-hexadecenal [7-9].
Anthranilonitrile (1equiv.), potassium carbonate (0.1 equiv.), and ethanolamine (1.7 equiv.) were placed in a Schlenk flask, followed by a solution of glycerol in dry ethylene glycol (5: 9) (3.3 mL of solution per mmol of anthranilonitrile).
Anionic surfactant is in common use consist of soap of Alkali, Amines, Metals, Sulphated alcohal and Sulphonates Alkali Soap: Potassium and sodium stearate Amines Soap: Ethanolamine, Di ethanolamine, Isopropanolamine, oleic acid Metals Soap: Calcium and aluminum stearate 4 Ampholytic Substances whose ionic characteristics depend upon pH of the system.
Evaluation of copper ethanolamine boron based wood preservative to control wood destroying insects.
This may lead to less availability of the phosphate groups for the phosphorylation of ethanolamine and choline needed for the synthesis of majorp hospholipids.