Term Name:	acid red 26
Synonyms:	C.I. 16150, CI F Food Red 5, disodium 4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonate, ponceau 2R, ponceau de xylidine, Ponceau Red R, xylidine ponceau
Definition:	An organic sodium salt that is the disodium salt of 4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonic acid. Its use is largely confined to Masson's trichrome, where it gives a slight orange shading to the red of the cytoplasmic structures.
Ontology:	ChEBI [CHEBI:82369]  ( EBI )