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        검색결과 1

        1.
        2005.07 KCI 등재 서비스 종료(열람 제한)
        A magenta azomethine dye(D) was synthesized from the reaction of 3-methyl-1-phenyl-2-pyrazoline-5-one with N,N-diethyl-1,4-phenylenediamine. The magenta azomethine dye was identified on the basis of elemental analysis, 13C-NMR, infrared, and GC/MS studies. The magenta azomethine dye was decomposed in a basic solution. Rate constants of the fading reaction of magenta azomethine dye in ethanol-water solvent were measured spectrophotometrically at 540 nm. Reaction rate was increased with the increase of [OH-] and [H2O] in the region of [H2O]= 11~40 M. The reaction was governed by the following rate law. -d[D]/dt = {ko + kOH[OH-][H2O]}[D] A possible mechanism consistent with the empirical rate law has been proposed.