Fast Yellow

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 Fast yellow Fast yellow Fast yellow G, Fast yellow extra, Acetyl yellow 13015 Acid yellow 9 Azo Acid 18.4% 0.24% 490 (Conn), 381 (Gurr) Yellow C13H9N3O6S2Na2 401.342

This dye is not commonly used, but it has been specified in Wallart & Honette's trichrome stain, where it stains collagen yellow, in contrast to red cytoplasm.

 

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

Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.