KINETICS AND MECHANISM OF HYDROLYSIS OF REACTIVE DYES IN SOLUTION

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Other Title
  • 反応染料水溶液の加水分解挙動
  • ハンノウ センリョウ スイヨウエキ ノ カスイ ブンカイ キョドウ

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Description

The kinetics and mechanism of alkaline hydrolysis of chlorotriazinyl reactive dyes containing imino groups have been studied at constant temperature over a range of pH values and dye concentrations by a paper chromatography.<br>The results obtained were explained in terms of the apparent second-order rate constant, and the hydrolysis was independent of dye concentration, but was dependent on pH of the dye liquor.<br>This could be explained by assuming that an acid-base equilibrium exists at imino bridged group of the dye. As is generally accepted, both values of dissociation constant (K) of imino bridged groups and the true rate constant (k) were expected to be increased by the substituent, having electron donating character. And this substitution effect was found to be larger at meta position than at para position.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 29 (12), T546-T550, 1973

    The Society of Fiber Science and Technology, Japan

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