ethylene

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ethylene

 [eth´ĭ-lēn]
a colorless, highly flammable gas with a slightly sweet taste and odor, used as an inhalation anesthetic to induce general anesthesia.
ethylene glycol a solvent with a sweet, acrid taste, used as an antifreeze. Acute poisoning by ingestion can result in central nervous system depression, vomiting, hypotension, coma, convulsions, renal damage, and death. While damage is thought to be due to the formed oxalic acid, ethanol is a good treatment because it competitively inhibits alcohol dehydrogenase. The unaltered ethylene glycol is then excreted in the urine.
ethylene oxide a gaseous, flammable alkylating agent with a broad spectrum of activity, capable of killing both spores and viruses; it must be mixed with CO2 or fluorocarbons because it is explosive above 3 per cent. It is used in hospitals, surgery, dentistry, and the pharmaceutical and other industries for disinfecting and sterilizing instruments and equipment that would be destroyed by heat or would be adversely affected by immersion in water or other media. Its optimal germicidal effect occurs after a 3-hour exposure at 30°C.ƒ

Ethylene oxide is toxic because it alkylates tissue constituents; it is carcinogenic and may produce adverse reproductive effects. Inhalation may cause nausea, vomiting, and neurological disorders, and severe exposure may be fatal. Before items exposed to ethylene oxide can be used they must be aired for 5 days at room temperature or for 8 hours at 120° C to remove any trace of the gas. This is also true for articles of clothing, such as gloves and shoes, that have been exposed, because chemical burns can occur when the contaminated clothing comes in contact with the skin.

eth·yl·ene

(eth'il-ēn),
An explosive constituent of ordinary illuminating gas; hastens ripening of fruit.

ethylene

(ĕth′ə-lēn′)
n.
A colorless flammable gas, C2H4, derived from natural gas and petroleum and also occurring as a natural plant hormone, used as a source of many organic compounds, in welding and cutting metals, to ripen citrus fruits, and as an anesthetic. Also called ethene.

eth′yl·e′nic (-ə-lē′nĭk, -lĕn′ĭk) adj.

ethylene

or

ethene

a simple hydrocarbon with the formula CH2=CH2 that can act as a PLANT HORMONE even when present in very low concentrations (down to 1 ppm). Ethylene inhibits elongation in most growing tissues and promotes leaf ABSCISSION and fruit ripening in some plants. Plant cells produce ethylene from the amino acid METHIONINE. A ripe banana or tomato in a bowl of unripe ones will speed up the ripening process by giving off ethylene.

eth·yl·ene

(eth'il-ēn)
An explosive constituent of ordinary illuminating gas.
References in periodicals archive ?
Results of the laboratory experiment indicated that C2H4 emission was directly proportional to the rate of PCCapplied in soil.
1st full mix HC only HC+CO HC+NO 2nd full mix C3H6 372 314 344 411 396 C2H4 379 334 357 427 407 C3H8 409 515 554 558 543 Note: Table made from bar graph.
The cultures were incubated for 30 min for the reduction of acetylene (C2H2) to ethylene (C2H4) to take place.
But as the consumption of alternative fuels becomes comparable to that of the liquid fuels, other unregulated emissions like Methanol (CH3OH), Ethanol (C2H5OH), Formaldehyde (HCHO), Acetaldehyde (CH3CHO), Formic Acid (HCOOH), Acetic Acid (CH3COOH), Propene (C3H8), Ethylene (C2H4), Ethyne (C2H2) Benzene (C6H6), 1,3-Butadiene (1,3-C4H6), Toluene (C7H8), Butene (C4H8) etc.
Quality attributes such as: weight loss (% PF), firmness (kg), total soluble solids, TSS (Brix), juice acidity (pH), CO2 and C2H4 concentration and other volatile compounds were measured.
Gases Main Flow Concentration N2(%) 79.8 O2(%) 2.4 CO (ppm) 0 to 500 CO2 (%) 11.4 NO (ppm) 580 NO2 (ppm) 170 H2O (%) 4.6 H2 0 C3H6 0 C2H4 0
[25.] Singleton, D.R., Pendleton, S.J., Gundersen, M.A., "The role of non-thermal transient plasma for enhanced flame ignition in C2H4 -air," J.