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.
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.