Synthesis of acid dyes was carried out by reacting diazotized substituted aryl amines and substituted naphthalene sulfonic acid as coupling component. Structural properties were studied by UV-visible spectroscopy, IR spectroscopy, 1H-NMR spectroscopy, MALDI-TOF mass spectrometric analysis and elemental analysis. Application of dyes was carried out on silk fabric and their fastness to light, washing, perspiration, and crocking was determined. The results revealed that the synthesized dyes are efficient for dyeing silk fabric which is evident from their excellent fixation, binding stability and fastness properties.

Zeeshan Akhtar, Syed Imran Ali, Muhammad Farooq, Salman Zubair, Rasheeda Parveen, Khalid M. Khan