Common Name: Chromotrope 2R
Suggested Name: Chromotrope 2R
Other Names:
Carmoisine 6R
C.I. Number: 16570
C.I. Name: Acid red 29
Color: Red
Solubility Aqueous: 19.30%
Solubility Ethanol: 19.30%
Absorption Maximum: 503, 542 (Conn) 510, 530 (Aldrich)
Empirical Formula: C16H10N2O8S2Na2
Formula Weight: 468.386
Description
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.
References
- 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,
Leonard Hill (Books) Ltd., London, UK. - Floyd J. Green
Sigma-Aldrich handbook of stains, dyes and indicators,
Aldrich Chemical Company Inc., Milwaukee, Wisconsin, USA.
