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Ponceau 6R

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This article is about Ponceau 6R. For other uses, see Ponceau (disambiguation).
Ponceau 6R
Names
Other names
  • Ponceau 6R
Identifiers
CAS Number
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.018.584 Edit this at Wikidata
E number E126 (colours)
PubChem CID
UNII
SMILES
  • ....Oc1cc(c2ccccc2c1N=Nc3c(O)c(cc4cc(cc(c34)S(=O)(=O))S(=O)(=O))S(=O)(=O))S(=O)(=O)
Properties
Chemical formula C20H12N2Na2O7S2
Molar mass 502.42 g·mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Ponceau 6R, or Crystal ponceau 6R, Crystal scarlet, Brilliant crystal scarlet 6R, Acid Red 44, or C.I. 16250, is a red azo dye. It is soluble in water 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. It usually comes as disodium salt.

Amaranth is a closely related azo dye, also usable in trichrome staining.

References

  1. PubChem. "Crystal Ponceau 6R". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-26.
  2. ^ "Crystal ponceau 6R, red powder C.I. 16250". VWR. Retrieved 2022-11-26.
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