dieldrinn.

/ˈdiːldrɪn/

Etymology: < the name of O. Diels (1876–1954), German chemist + -drin, after aldrin n.: so called because the Diels-Alder reaction (the diene synthesis) was used in preparing it.

Chemistry.

A crystalline solid, C₁₂H₈Cl₆O, white when pure and light brown in commercial preparations, which is an epoxide of aldrin and is used as an insecticide.

ΚΠ

1949 Dieldrin (Interdepartmental Comm. Pest Control, Bur. Entomol. & Plant Quarantine, U.S. Dept. Agric.) 1 The coined generic name ‘dieldrin’ is announced for an insecticidal product..meeting the specifications set forth in the attached statement.

1950 Adv. Chem. Series (Amer. Chem. Soc.) i. 177 The most interesting oxidation of aldrin..is the oxidation with per acids. This oxidative process..produces 6, 7-epoxy-6, 7-dihydroaldrin, the compound now called dieldrin.

1956 Nature 17 Mar. 532/2 In connexion with the..Malaria Control Pilot Project, an area of about 300 square miles has been set aside for treatment with dieldrin.

1957 New Scientist 23 May 25/1 Dieldrin, used as a sheep dip in Australia as a protection against blowflies, was found to impregnate the wool fibres almost irremovably.

1969 Times 24 Mar. 4/5 There are severe restrictions on the use of the persistent insecticide dieldrin.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).

单词	dieldrin
释义	dieldrinn. /ˈdiːldrɪn/ Etymology: < the name of O. Diels (1876–1954), German chemist + -drin, after aldrin n.: so called because the Diels-Alder reaction (the diene synthesis) was used in preparing it. Chemistry. A crystalline solid, C₁₂H₈Cl₆O, white when pure and light brown in commercial preparations, which is an epoxide of aldrin and is used as an insecticide. ΚΠ 1949 Dieldrin (Interdepartmental Comm. Pest Control, Bur. Entomol. & Plant Quarantine, U.S. Dept. Agric.) 1 The coined generic name ‘dieldrin’ is announced for an insecticidal product..meeting the specifications set forth in the attached statement. 1950 Adv. Chem. Series (Amer. Chem. Soc.) i. 177 The most interesting oxidation of aldrin..is the oxidation with per acids. This oxidative process..produces 6, 7-epoxy-6, 7-dihydroaldrin, the compound now called dieldrin. 1956 Nature 17 Mar. 532/2 In connexion with the..Malaria Control Pilot Project, an area of about 300 square miles has been set aside for treatment with dieldrin. 1957 New Scientist 23 May 25/1 Dieldrin, used as a sheep dip in Australia as a protection against blowflies, was found to impregnate the wool fibres almost irremovably. 1969 Times 24 Mar. 4/5 There are severe restrictions on the use of the persistent insecticide dieldrin. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018). < n.1949
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