Table 1.
Maximal absorption wavelength, molar extinction coefficient at pH 8 and chemical structure of the selected dyes (Sigma-Aldrich).
| Wavelength (nm) | Molar Coefficient (M−1 cm−1) | Chemical structure | |
|---|---|---|---|
| Acid Black 48 (AB48) |  |
||
| Antraquinone type (Ref. 194247) | 657 | 14,759 | |
| Acid Orange 63 (AO63) |  |
||
| Diazo type (Ref. 201979) | 418 | 40,165 | |
| Reactive Black 5 (RB5) |  |
||
| Diazo type (Ref. 306452) | 596 | 44,226 | |
| Orange II (OII) |  |
||
| Azo type (Ref. 195235) | 485 | 23,352 | |
| Tartrazine (Tart) |  |
||
| Azo type (Ref. T0388) | 425 | 28,568 | |
| Azure B (AB) |  |
||
| Heterocyclic type (Ref. A4043) | 645 | 50,359 | |
| Indigo carmine (IC) |  |
||
| Indigo type (Ref. 73436) | 609 | 22,711 | |
| Cresol red (CR) |  |
||
| Triarylmethane type (Ref. 114472) | 434 | 22,133 |