The synthesis and the spectrophotometric study of some new azodyes derived from 1-hydroxy-2-naphthoic acid and sulfadiazine derivatives

الملخص EN

This study involves the preparation of three azodyes derived from 1-hydroxy- 2-naphthoic acid and sulfadiazine derivatives.

The characterization of Dyes 4-(sulfadiazineazo)-1-hydroxy-2-naphthoic acid ( FR1R), 4-(sulfamerazineazo)-1-hydroxy2-naphthoic acid (FR2R) and 4-(sulfamethazineazo)-1-hydroxy2-naphthoic acid (FR3R) have been described by C.

H.

N.

The I.

R.

and V.

and UV.

spectroscopic techniques were carried out .

The acid-base properties were studied at different pH values and the dissociation and protonation constants of dyes were determined, as well as the solvents effect were studied at different solvents polarities