抄録
4-Chloro-2-butynyl N-(3-chlorophenyl) carbamate (Barban) is an herbicide whose alkaline hydrolysis leads to the release of the chlorine atom of the ester group. The dechlorination kinetics were investigated in alkaline media at 25°C and followed spectrophotometrically or colorimetrically. The rate law of this reaction is complex and shows that the substrate as well as its anion are the reactive species. The pKa value determined spectrophotometrically was 13.50.
