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Citation: JIAN Wei, CHENG Lü-Bai, YI Jiang-Hua. The Absorption Spectral Properties of Pyridone-based Disperse Azo-dyes[J]. Chinese Journal of Applied Chemistry, ;2002, 19(8): 798-800. shu

The Absorption Spectral Properties of Pyridone-based Disperse Azo-dyes

1.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012

Corresponding author: CHENG Lü-Bai,
Received Date: 5 December 2001
Available Online: 19 March 2002

The visible absorption spectra of some pyridone-based disperse azo-dyes have been studied as function of pH values and solvents. The relationship between the hydrazone azo-anion equilibrium and the pH value of dye solution is discussed. The pyridone-based disperse dyes readily undergo acid dissociation to give the anion form at higher pH values or in ethanol, DMF and DMSO.
- pyridone,
- disperse azo-dye,
- visible absorption spectrum
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