Biebrich scarlet | |
Synonms | Croceine scarlet |
| Ponceau B or BS |
C.I. number | 26905 |
C.I. name | Acid red 66 |
Class | Azo |
Solubility aqueous | Soluble |
Solubility ethanol | 0.05% |
Absorption maximum | 504 (Conn), 506 (Gurr) |
| 505 (Aldrich) |
Colour | Red |
Empirical formula | C22H14N4O7S2Na2 |
Formula weight | 556.5 |