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单词 dichloromethane
释义

dichloromethanen.

Brit. /ˌdʌɪklɔːrəʊˈmiːθeɪn/, /dʌɪˌklɔːrəʊˈmiːθeɪn/, U.S. /ˌdaɪˌklɔroʊˈmɛˌθeɪn/
Origin: Formed within English, by compounding. Etymons: dichloro- comb. form, methane n.
Etymology: < dichloro- comb. form + methane n. Compare chloromethane at chloro- comb. form2 1.
Chemistry.
A volatile, sweet-smelling liquid used as a solvent, esp. for the extraction of organic substances and as a component of paint removers. Also called methylene chloride.Formula: CH2Cl2.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > alkane derivatives
iodomethane1868
dichloromethane1869
nitromethane1872
methylene chloride1880
diazomethane1894
methylene dichloride1895
1866 W. Odling Lect. Animal Chem. iv. 88 (table) CH2Cl2. Dichloromethene.]
1869 R. Bridges Fownes's Man. Elem. Chem. 513 By the action of chlorine in sunshine it [sc. methyl chloride] is successively converted into methene chloride, or dichloromethane..; methenyl chloride..carbon tetrachloride.
1917 M. J. Rosenau Preventive Med. & Hygiene (ed. 3) iv. 295 Human lice can be destroyed with kerosene, turpentine, tincture of Cocculus indicus, dichloromethane, and other insecticides.
1989 Nature 7 Sept. 43/1 The wax coating of the needles was extracted twice with dichloromethane.
2012 Environmental Health Perspectives 120 106/2 The tissue samples were fortified with internal standards, mixed with dichloromethane, and chemically dried using sodium sulfate.
This is a new entry (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1869
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