MB /aqueous solution |
MB+/clay-Na |
NR /aqueous solution |
NR /clay-Na |
MG/aqueous solution |
MG/ clay-Na |
pH |
MB+ |
(MB+)2 |
MB+ |
(MB+)n |
NR+H |
NR |
NR+H |
NR |
MG+ |
MG2+H |
MG+ |
MG2+H |
3 |
648 |
- |
658 |
*608 |
520.5 |
- |
527 |
- |
617 |
424 |
621 |
426 |
4 |
- |
- |
- |
- |
519.5 |
- |
527.5 |
- |
- |
- |
- |
- |
5/ 5.4 |
668 |
624 |
- |
585 |
521.5 |
- |
523.5 |
- |
617 |
425 |
619 |
- |
6.5/ 7 |
647 |
- |
- |
588 |
518 |
- |
- |
460 |
617 |
424 |
617 |
426 |
8/ 9 |
668 |
- |
- |
584 |
- |
454 |
- |
452.5 |
617 |
423 |
631 / 596 |
- |
10 |
|
- |
- |
- |
- |
451.5 |
- |
452 |
Col. |
Col. |
Col. |
Col. |
11 |
668 |
621 |
- |
567 |
- |
|
- |
|
Col. |
Col. |
Col. |
Col. |
12 |
- |
- |
- |
- |
- |
451 |
- |
450.5 |
Col. |
Col. |
Col. |
Col. |
13 |
653 |
610 |
- |
566 |
- |
|
- |
|
Col. |
Col. |
Col. |
Col. |
MB+, (MB+)2 and (MB+)n : monomer, dimer and agglomerates forms of Methylene blue dye.
NR+H and NR: monomer and conjugate base form of Neutral red dye. Col.: colorless.
MG+ and MG2+H: monomer and protonated cations forms of Malachite green oxalate dye. |