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KMID : 1024520050140070711
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Journal of the Environmental Sciences
2005 Volume.14 No. 7 p.711 ~ p.717
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Rates and Mechanism of Fading Reaction of Magenta Azomethine Dye in Basic Solution
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Lee Joong-Ho
Kim Jung-Sung
Kim Chang-Su
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Abstract
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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, , 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 in the region of . The reaction was governed by the following rate law. -d[D]/dt = A possible mechanism consistent with the empirical rate law has been proposed.
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KEYWORD
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Magenta azomethine dye, 3-methyl-1-phenyl-2-pyrazoline-5-one, N, N-diethyl-1, 4-phenylenediamine
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