Kinetics of Hydrolysis of Dichlorotriazinyl Reactive Azo Dyes
| Autor: | Maria E. Amato, Salvatore Occhipinti, Gaetano Alberghina, Salvatore Fisichella |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
010302 applied physics
Polymers and Plastics Kinetics 02 engineering and technology 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences chemistry.chemical_compound Hydrolysis chemistry 0103 physical sciences Chemical Engineering (miscellaneous) 0210 nano-technology Derivative (chemistry) |
| Zdroj: | Textile Research Journal. 51:683-687 |
| ISSN: | 1746-7748 0040-5175 |
| Popis: | The rate of hydrolysis of some dichlorotriazinyl reactive azo dyes is measured where the triazinyl-ring is attached to a derivative of H-acid in the buffer solutions over the range 25-35°C. The rate constants obtained at constant pH are pseudo-first-order, but they are dependent on the concentration of hydroxyl ion. This dependence of the hydrolysis constants on the hydroxyl ion concentration is explained, supposing that, as the pH of the dye solution increases, ionization of the phenolic hydroxyl group at the 8-positioh in the naphthalene ring occurs to give a less reactive ionized form. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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