![]() | |
Names | |
---|---|
Other names
| |
Identifiers | |
3D model (
JSmol)
|
|
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.018.584 |
E number | E126 (colours) |
PubChem
CID
|
|
UNII | |
| |
Properties | |
C20H12N2Na2O7S2 | |
Molar mass | 502.42 g·mol−1 |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Ponceau 6R, or Crystal ponceau 6R, Crystal scarlet, Brilliant crystal scarlet 6R, Acid Red 44, or C.I. 16250, [1] [2] is a red azo dye. It is soluble in water [2] and slightly soluble in ethanol. It was used as a food dye, formerly having E number E126. It is also used in histology, for staining fibrin with the MSB Trichrome stain. [2] It usually comes as disodium salt.
Amaranth is a closely related azo dye, also usable in trichrome staining.