Ponceau S

Property Data Common name Suggested name Other names C.I. number C.I. name Class Ionisation Solubility aqueous Solubility ethanol Absorption maximum Colour Empirical formula Formula weight Ponceau S Ponceau S – 27195 – Azo Acid Soluble – 520, 352 Red C22H12N4O13S4Na4 760.6

Ponceau S has been recommended as a substitute for acid fuchsin in Van Gieson's method for collagen. It fades less than acid fuchsin, but does not demonstrate fine fibres as well

 

Reference
R. D. Lillie.
Conn's Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A.

Aldrich chemical catalogue, 1992
Aldrich Chemical Company, Milwaukee, WI, USA.

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