ethylene


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Related to ethylene: ethylene glycol

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 ?
"Asia-Pacific region controls the largest share in the global ethylene market on account of increasing demand for ethylene derivatives from packaging industry along with automobile and construction sector.
After completing a survey with the GCC Ethylene Producers, the technical topics chosen will be aimed at discuss solutions to challenges the industry faces today.
Under the theme, 'Sustaining Ethylene Competitiveness Through Solution Sharing', 12 of the 18 presentations will be made by operators/owners sharing the solutions implemented in their plants.
West Ethylene Pipeline, under way from Assaluyeh in southern Iran to Tabriz is 2,450 kilometers long.
Another idea is to prevent ethylene from stimulating respiration in the first place.
This expansion will add 70 pounds of stated annual ethylene capacity to the Calvert City facility during the first half of 2017.
The majority of all ethylene produced is consumed in the polyethylene industry.
[2] reported a reversible chemoresistive sensor for the detection of ethylene operating at room temperature with SWCNTs doped with copper (I) complex and observed a sensitivity of 1.8% (change in conductivity) for 50 ppm ethylene concentration.
The specialty chemicals company produces on the sire ethylene oxide, for which ethylene is a major raw material.
Ethylene is the basis of the household trick of speeding the ripening of green fruit by placing it in a sealed bag.
Ethylene was injected into the West Ethylene Pipeline in Assaluyeh Port in Bushehr Province , IRNA reported.