シュアサイド<sup>®</sup> (<i>O</i>-エチル<i>O</i>-4-シアノフェニルフェニルホスホノチオエート) およびサイアノックス<sup>®</sup> (<i>O</i>, <i>O</i>-ジメチル<i>O</i>-4-シアノフェニルホスホロチオエート) の光分解

DOI NDLデジタルコレクション Web Site 被引用文献1件
  • 三上 信可
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.
  • 大川 秀郎
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.
  • 宮本 純之
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.

書誌事項

タイトル別名
  • Photodecomposition of Surecide<sup>®</sup> (<i>O</i>-Ethyl <i>O</i>-4-Cyanophenyl Phenylphosphonothioate) and Cyanox<sup>®</sup> (<i>O</i>, <i>O</i>-Dimethyl <i>O</i>-4-Cyanophenyl Phosphorothioate)

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Exposure of Surecide and Cyanox to UV light in acetone solution resulted in rapid decomposition. The photodecomposition reactions observed were oxidation of P=S to P=O, cleavage of P-O-aryl and P-O-alkyl linkages, liberation of hydrogen cyanide and carbon dioxide, and carboxylation of 4-cyanophenol. These photochemical processes were almost common to both the organophosphorous compounds. When exposed to sunlight, Surecide and Cyanox were fairly stable in water, 21.7% and 35% decomposed after 20-day exposure, respectively, and gradually converted majorly into the oxon analogs, 4-cyanophenol and desmethyl cyanox-oxon, whereas both the organophosphorous compounds rapidly decomposed on silica gel and soil thin-layer plates. Sunlight could have a significant effect on the degradation of Surecide and Cyanox in the environment.

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