Study the effect of some solvents on the λmax and absorbance of bromo phenol blue and phenol red indicators

This study which carried out on some indicators including (Phenol red and Bromo phenol Blue). Different solvents were used including (Methanol, propanol, DMF and DMSO). The effect of solvents on the λ max and absorbance values were investigated. The results recorded that the λmax values were effected and changed according to the polarities of the applied solvents. Also, the obtained results showed changes in the absorbance values after applied solvents compared with the original absorbance values. Keywords: Bromophenol blue; Phenol red; Effect of solvents on electronic transitions