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|Section2= |Section3= }} Lewisite is an organoarsenic compound. It was once manufactured in the U.S., Japan, and Germany〔(A drop in the ocean: the sea-dumping of chemical weapons in Okinawa | The Japan Times )〕 for use as a chemical weapon, acting as a vesicant (blister agent) and lung irritant. Although colorless and odorless, impure samples of lewisite are a yellow or brown liquid with a distinctive odor that has been described as similar to geraniums.〔 ==Chemical reactions== The compound is prepared by the addition of arsenic trichloride to acetylene in the presence of a suitable catalyst: :AsCl3 + C2H2 → ClCHCHAsCl2 (Lewisite) Lewisite, like other arsenous chlorides, hydrolyses in water to form hydrochloric acid: :ClCHCHAsCl2 + 2 H2O → ClCHCHAs(OH)2 + 2 HCl This reaction is accelerated in alkaline solutions, with an arsenic salt being the co-product. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「lewisite」の詳細全文を読む スポンサード リンク
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