Eosin Y, also called C.I. 45380[1][2] or C.I. Acid Red 87,[2][1] is a member of the triarylmethane dyes. It is produced from fluorescein by bromination.[3]

Use

Eosin Y is commonly used as the red dye in red inks.

It is commonly used in histology, most notably in the H&E (Haematoxylin and Eosin) stain.[1] Eosin Y is also widely used in the Papanicolaou stain (or Pap stain used in the Pap test) and the Romanowsky type cytologic stains.[1][2] It is also used as a photosensitizer in organic synthesis.[4]

  • Eosin Y solution for staining microscopy slides.
    Eosin Y solution for staining microscopy slides.
  • Eosinophilic staining, using eosin Y, compared to other patterns when using hematoxylin and eosin (H&E).
    Eosinophilic staining, using eosin Y, compared to other patterns when using hematoxylin and eosin (H&E).

See also

References

  1. ^ a b c d Bancroft, John; Stevens, Alan, eds. (1982). The Theory and Practice of Histological Techniques (2nd ed.). Longman Group Limited.
  2. ^ a b c Lillie, Ralph Dougall (1977). H. J. Conn's Biological stains (9th ed.). Baltimore: Williams & Wilkins. pp. 692p.
  3. ^ Gessner, Thomas; Mayer, Udo (2000). "Triarylmethane and Diarylmethane Dyes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a27_179. ISBN 978-3527306732.
  4. ^ Diercxsens, Nicolas (2017-04-10), "Eosin Y", Encyclopedia of Reagents for Organic Synthesis, Chichester, UK: John Wiley & Sons, Ltd, pp. 1–3, doi:10.1002/047084289x.rn02033, ISBN 978-0-470-84289-8