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单词 perchloroethylene
释义

perchloroethylenen.

Brit. /pəˌklɔːrəʊˈɛθᵻliːn/, U.S. /pərˌklɔroʊˈɛθəˌlin/
Forms: 1800s– perchlorethylene, 1800s– perchloroethylene.
Origin: Formed within English, by compounding; perhaps modelled on a German lexical item. Etymons: perchloro- comb. form, ethylene n.
Etymology: < perchloro- comb. form + ethylene n., perhaps after German Perchloräthylen (1873 or earlier).
Chemistry.
A colourless, non-flammable, toxic liquid, C2Cl4, which is widely used as a solvent, esp. in dry-cleaning fluid, and medicinally for the treatment of worm infestations; abbreviated PCE. Also called tetrachloroethylene.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkenes > tetrachlorothene
perchloroethylene1873
tetrachloroethylene1911
1873 Jrnl. Chem. Soc. 26 866 The action of sodium ethylate on perchloroethylene has been studied by Fischer and Geuther.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) vi. 155 Perchloroethylene, C2Cl4,..is prepared from CCl4.
1963 Economist 12 Jan. 115/2 The customer can watch her clothes tumbling through a solvent (perchlorethylene).
1992 Independent 4 Aug. 13/1 People who work in dry cleaners' may be at risk of kidney failure because of exposure to the solvent perchloroethylene (PCE).
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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n.1873
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