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phosgene

phosgene (fŏs´jēn), colorless poison gas, first used during World War I by the Germans (1915). When dispersed in air, the gas has the odor of new-mowed hay. The gas is highly toxic; when inhaled it reacts with water in the lungs to form hydrochloric acid and carbon monoxide. Because the upper respiratory tract is little affected, warning signs of exposure are slight, and symptoms may fail to appear for from 2 to 24 hours after exposure. However, the release of hydrochloric acid in the lungs causes pulmonary edema and may also cause bronchial pneumonia and lung abscesses; in severe cases death may result within 36 hours. Phosgene is now used in chemical synthesis. It may be prepared by the reaction of carbon monoxide with chlorine in the presence of a catalyst or by the oxidation of chloroform or carbon tetrachloride. Phosgene has the formula COCl2.

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"phosgene." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

"phosgene." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (July 22, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/phosgene

"phosgene." The Columbia Encyclopedia, 6th ed.. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/phosgene

phosgene

phosgene (carbonyl chloride, COCl2) Colourless, toxic gas. It was used as a poison gas in World War I but is now used in the manufacture of various dyestuffs and resins. Properties: b.p. 8.2°C (46.8°F); m.p. –118°C (–180.5°F).

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"phosgene." World Encyclopedia. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

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"phosgene." World Encyclopedia. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/phosgene

phosgene

phos·gene / ˈfäsjēn/ • n. Chem. a colorless poisonous gas, COCl2, made by the reaction of chlorine and carbon dioxide. It was used as a poison gas, notably in World War I.

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"phosgene." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

"phosgene." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (July 22, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/phosgene-0

"phosgene." The Oxford Pocket Dictionary of Current English. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/phosgene-0

phosgene

phosgene (fos-jeen) n. a poisonous gas developed during World War I. It is a choking agent, acting on the lungs to produce oedema, with consequent respiratory and cardiac failure.

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"phosgene." A Dictionary of Nursing. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

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"phosgene." A Dictionary of Nursing. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/phosgene

phosgene

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"phosgene." Oxford Dictionary of Rhymes. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

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"phosgene." Oxford Dictionary of Rhymes. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/phosgene