Ponceau 6R

From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article is about Ponceau 6R. For other uses, see Ponceau (disambiguation).
Ponceau 6R
Ponceau 6R.png
Other names
Ponceau 6R
Jmol 3D model Interactive image
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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 is used as a food dye, with 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.

Its CAS number is 2766-77-0 and its SMILES structure is OC1=C(N=N C3=C(C=CC=C4) C4=CC=C3)C2=C (C=C(S(=O) ([O-])=O)C=C2 S(=O)([O-]) =O)C=C1.