アセトンの塩素化によるトリクロロメタンの生成

概要

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To examine the reaction process for trichloromethane formation through the chlorination of acetone in the neibourfood of pH=7,acetone was allowed to react with chlorine aqueous solution at 25℃, pH=1-8. The results obtained were as follows : (1) Monochloroacetone was formed at pH=1-5,but 1,1-dichloroacetone, 1,1,1-trichloroacetone and trichloromethane were not detected. (2) At pH=6-7,monochloroacetone, 1,1,1-trichloroacetone and trichloromethane were found. (3) At pH=7.8,monochloroacetone and trichloromethane were formed, but 1,1,1-trichloroacetone was not detected. Therefore, it was concluded that the formation of monochloroacetone is a rate-limiting step in the reaction sequence at pH=7 and the amounts of trichloromethane depend on the concentration of OH^- in the following equation. CH_8COCCl_3+OH^-→CH_3COO^-+CHCl_3
公益社団法人日本薬学会の論文
1985-04-30