Dyes

Methylene bleu (MB)

Méthyl orange (MO)

Molecular structure

Wavelength of maximal absorption ( ${\lambda }_{\max }$ ) and Molecular Weight MW ( $\text{g}\cdot {\text{mol}}^{-1}$ )

Methylene blue

Methyl orange

${\lambda }_{\max }$ (nm)

664

464

MW ( $\text{g}\cdot {\text{mol}}^{-1}$ )

319.85

327.33