This dye has been used in histology only rarely. Lendrum, Slidders and Fraser recommended it for their standardised trichrome method, considering it to be a suitable plasma stain after silver impregnations.
It should be noted that it is not related to eosin, although it is an azo dye. The name presumably reflects a similarity in colour.
Aldrich chemical catalogue, (1992)
Aldrich Chemical Company, Milwaukee, WI, USA.
Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.