All the employed chemicals were of analytical reagent grade.
The aromatic amines shown in Table 1 were used for diazotization.
Wool and silk fabrics were gifted by Color Tax
(Pvt) Ltd., Surat, India. Melting points were determined
by the open capillary method and are given uncorrected.
The UV visible absorption spectra were measured on a Carl
Zeiss UV/Vis Specord spectrometer, and the elemental analysis
was realized using a Perkin Elmer CHNS/O Analyzer
2400 Series II