Chromotrope 2R

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
Chromotrope 2R
Chromotrope 2R
Carmoisine 6R
16570
Acid red 29
Azo
Acid
19.3%
0.17%
503, 542 (Conn)
510, 530 (Aldrich)
Red
C16H10N2O8S2Na2
468.386

Chromotrope 2R may be used as the plasma stain in trichrome techniques, most notably in Gomori's one-step method. It can replace xylidine ponceau in Masson's trichrome.
 
It has been suggested as a replacement for eosin Y following nuclear staining with celestine blue B. One of its most well known uses is in solution with phenol in Lendrum's method for eosinophil granules.

 

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.

Edward Gurr.
Encyclopaedia of microscopic stains, 1960
Leonard Hill (Books) Ltd., London, UK.

Floyd J. Green
Sigma-Aldrich handbook of stains, dyes and indicators, 1990
Aldrich Chemical Company Inc., Milwaukee, Wisconsin, USA.

 


 

Translate in
Google Translate
Instructions