Azo-eosin

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
 Azo-eosin
Azo-eosin
Azoeosin G
14710
Acid red 4
Azo
Acid
Moderate
Slight
509 (Gurr)
508, 376 (Aldrich)
Red
C17H13N2O5SNa
380.36

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.

 

Reference
Aldrich chemical catalogue, (1992)
Aldrich Chemical Company, Milwaukee, WI, USA.

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

 


 
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Last updated May 2005.