The hydrolysis of CI Reactive Red 194 and model compounds was investigated at 50°C by high pressure liquid chromatography (HPLC). In order to examine the effects of a m-vinylsulfonyl substituent in the phenyl group bound with the triazine nucleus via an imino group on the reactivity of monochlorotriazinyl (MCT) groups, the hydrolysis of CI Reactive Red 3 was also examined at 50°C. A reaction scheme for the alkaline hydrolysis of both the dyes was determined. In addition to the normal hydrolysis of vinylsulfonyl (VS) and MCT groups, the imino bridge groups between the chromophore and the triazine nucleus are also hydrolysed. The pseudofirst-order rate constants for both the dyes in the reaction scheme were estimated at pH 9–12 and 50°C. The hydrolysis of either the VS or MCT groups for CI Reactive Red 194 has a large influence on the reactivity of the other VS, MCT or imino bridge group which remain unhydrolysed.

中文翻译：

---

混合双功能活性染料（CI反应性红194）和相关化合物的反应性基团的水解和副反应

通过高压液相色谱（HPLC）在50°C下研究了CI Reactive Red 194和模型化合物的水解。为了检查一个m的影响经由亚氨基与一氯三嗪基（MCT）基团的亚氨基键合到三嗪核上的苯基中的-乙烯基磺酰基取代基，还在50℃下检查了CI反应性红3的水解。确定了两种染料的碱性水解反应方案。除了乙烯基磺酰基（VS）和MCT基团的正常水解外，生色团和三嗪核之间的亚氨基桥基也被水解。在反应方案中，两种染料在pH 9-12和50°C时的拟一级反应速率常数都被估算出来。CI反应性红色194的VS或MCT基团的水解对其他未水解的VS，MCT或亚氨基桥基的反应性具有很大影响。