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Erythrosin B

Dye

Erythrosin B

Class: Fluorone
Ionisation: Acid

Chemical structure of Erythrosin B

Common Name: Erythrosin B
Suggested Name: Erythrosin B
Other Names:

–

C.I. Number: 45430
C.I. Name: Acid red 51
Color: Red
Solubility Aqueous: 11%
Solubility Ethanol: 11%
Absorption Maximum: 524 (Merck) 525 (Gurr) 524-527 (Conn)
Empirical Formula: C20H6O5I4Na2
Formula Weight: 879.9

Description

This dye is not commonly used in North America, although it is a perfectly satisfactory substitute for Eosin Y ws. In Europe, it is used instead of Phloxine in the hematoxylin phloxine saffron (HPS) stain, which is the same as the hematoxylin erythrosine saffron (HES) method in Europe.

Compare the structural formulae of some eosin homologs.

References

  1. R. D. Lillie.
    Conn’s Biological Stains
    Williams & Wilkins, Baltimore, MD., U.S.A.
  2. Aldrich chemical catalogue, 1992
    Aldrich Chemical Company, Milwaukee, WI, USA.
  3. Susan Budavari, Editor,
    The Merck Index, Ed. 12
    Merck & Co., Inc., Whitehouse Station, NJ, USA
  4. Edward Gurr, 1971
    Synthetic dyes in biology, medicine and chemistry
    Academic Press, London, England.