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Abstract

Several azo dyes were synthesized through coupling reaction of some substituted phenols and B- naphthol with diazonium salt of 2-amino-1,3,4-thiadiazol -5- Thiol. All the synthesized compounds during this work were characterized using some spectral data (FTIR and UV). 1 2-[2-Hydroxy naphthyl-azo] -1, 3,4 thiadiazol-5-thiol. 2 2-[4'-Hydroxy-3'-nitro phenyl azo]-1,3,4 thiadiazol-5-thiol. 3 2-[2'-Hydroxy-5'nitro phenyl azo]-1, 3,4 thiadiazol-5-thiol. 4 2-[3',5'-Di methoxy-4'-hydroxy phenyl azo]-1,3,4 thiadiazol-5-thiol. 5 [2'-4' Di hydroxy phenyl azo] -1,3,4 thiadiazol-5-thiol.

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