Ethyleneimine

ethyleneimine

[‚eth·ə′lēn·ə‚mīn]
(organic chemistry)
C2H4NH Highly corrosive liquid, colorless and clear; miscible with organic solvents and water; used as an intermediate in fuel oil production, refining lubricants, textiles, and pharmaceuticals. Also known as aziridine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ethyleneimine

 

(also aziridine), a colorless, mobile liquid with the odor of ammonia.

Ethyleneimine has the structural formula

It has a boiling point of 56.7°C, a melting point of – 73.9°C, and a density of 0.837 g/cm3 at 20°C. Readily soluble in water, it also dissolves in most organic solvents. Ethyleneimine is produced by reacting ethanolamine with sulfuric acid and then treating with a base the resulting sulfuric acid ester; it can also be produced by the action of bases on 2-bromoethylamine.

Ethyleneimine is highly toxic; the maximum permissible concentration of its vapors in the air is 0.02 mg/m3. In the liquid phase, ethyleneimine is very damaging to the skin. Both ethyleneimine and its derivatives have mutagenic properties. Several of these derivatives—including triethylenephosphoramide and thiotriethylenephosphoramide—are used in medicine (as alkylating antineoplastics), and in agricultural, microbiological selection. Polyethyleneimine (the polymer of ethyleneimine) has a low toxicity and is used as an auxiliary agent for various purposes—for example, to increase the strength of rubber and paper or purify waste waters.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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An aqueous solution of HN[O.sub.3] (nitric acid) was treated with the sample followed by refluxing for 12 h, later polyethylene glycol (PEG1500N) or poly propionyl ethyleneimine-co ethyleneimine was reacted with the sample, and the passivated C-dots were highly photoluminescent, having size of about 5 nm.
Wet Spinning of Poly(ethyleneimine)- (PEI-) CNT Fibers.
Hong et al., "Micro-nano structure poly (ether sulfones)/poly(ethyleneimine) nanofibrous affinity membranes for adsorption of anionic dyes and heavy metal ions in aqueous solution," Chemical Engineering Journal, vol.
Lebrun, "Removal of heavy metal ions from aqueous solutions by filtration with a novel complexing membrane containing poly (ethyleneimine) in a poly(vinyl alcohol) matrix," Journal of Membrane Science, vol.
AgNPs have been conjugated to different molecules with antibacterial activity in order to obtain synergic effects, such as poly(ethyleneimine) [9], amoxicillin [10], polysaccharides [11], peptides [12], surfactants, and polymers [13].
reported a unique example of self-healing superhydrophobic surface based on chemical crosslinking of branched poly(ethyleneimine) and poly(vinyl-4,4-dimethylazlactone) multilayers, followed by reaction with hydrophobic n-decylamine molecules.
BASF has obtained a patent for a n aqueous coating formulation comprised of a substituted, branched polyethyleneimine, which is obtained by a process comprised of reacting a branched polyethyleneimine having a weight-average molecular weight of from 500 to 10,000 g/mol with a carboxylic acid derivative of formula (I) R--(C=0)X (I), wherein R is a C5 to C18 alkyl group or a C5 to C18 alkenyl group, X is a halogen, a hydroxyl group, or a group R--(C=0)--O--, a molar amount of the carboxylic acid derivative in the reacting is from 3 to 10 mol percent of a molar amount of ethyleneimine employed in preparing the branched polyethyleneimine, the reacting is comprised of formation and removal of a byproduct HX, and the formulation is configured to coat a substrate that is comprised of tannin.
After 1 hour the beads were washed and stored at 4 C in distilled water (Safa and Bhatti 2011).Sugarcane bagasse was treated with different chemicals like acids (nitric acid sulphuric acid hydrochlorioc acid acetic acid) bases (NaOH KOH NH4OH) surfactants (CTAB SDS Triton X-100) organic solvent (benzene) chelating agents (glutaraldehyde Poly ethyleneimine EDTA) to see the effect of treatments on its biosorption capacity following reported methods (Bhattiet al.
Mikos, "Size matters: molecular weight affects the efficiency of poly (ethyleneimine) as a gene delivery vehicle," Journal of Biomedical Materials Research, vol.
Also a micronanostructure poly (ether sulfones)/poly (ethyleneimine) nanofibrous membrane was utilized as an adsorbent for anionic dyes [9].
Thiotepa (N N' N'' triethylenethiophosphoramide; TTP) is an alkylating agent of the ethyleneimine family that is known for its antitumour effect on many types of malignancies [15].
and Rempel, G.L.: 1986, Removal of copper and silver ions from dilute aqueous solutions using mercaptoacetimide of poly (ethyleneimine) and poly (propyleneimine), React.