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单词 heptachlor
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heptachlor
heptachlor n.
Brit. /ˈhɛptəklɔː/
,
U.S. /ˈhɛptəˌklɔr/
Chemistry a chlorinated hydrocarbon, C10H5Cl7, used as an insecticide.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > halogenated hydrocarbons > specific
tetrachlorethane1871
pentachloroethane1872
trichloroethylene1889
Freon1932
tetrafluoroethylene1933
fluorocarbon1937
perfluorocarbon1947
heptachlor1949
tetrachlorodibenzodioxin1959
TCDD1971
CFC1976
1949 Jrnl. Econ. Entomol. 42 328/1 Heptachlor, a close relative of chlordan, gave results superior to chlordan.
1961 New Scientist 6 July 9/2 British manufacturers of agricultural chemicals have agreed with the Government to restrict the use of three pesticides..aldrin, dieldrin and heptachlor.
1962 R. L. Carson Silent Spring (1963) x. 140 Heptachlor, after a short period in the tissues of animals or plants or in the soil, assumes a considerably more toxic form known as heptachlor epoxide... The Food and Drug Administration took action which had the effect of banning any residues of heptachlor or its epoxide in food.
1968 M. Pyke Food & Society viii. 119 [They] found not only DDT and its breakdown products, but BHC, heptachlor and dieldrin as well in the tissues of penguins.
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