All newly synthesized acid mono azo dyes and mordent acid
monoazodyes exhibited very good to excellent fastness to
light, sublimation, washing, perspiration and rubbing. The
remarkable degree of levelness after dyeing indicates good penetration into, and affinity of these dyes for the fabric matrix.
They give deep and bright hues with leveling dyeing. The nature of the substituent in the coupling component has little
influence on the UV–visible absorption and shade of the dyeing. A comparison of the acid mono azo and the mordent acid
azo dyes revealed that the mordent acid mono azo dyes have
better shades than the acid azo dyes.