Common Name: Gallein
Suggested Name: Alizarin violet
Other Names:
–
C.I. Number: 45445
C.I. Name: Mordant violet 25
Color: Brown yellow
Solubility Aqueous: Poor
Solubility Ethanol: Poor
Absorption Maximum: 526 (Gurr)
Empirical Formula: C20H12O7
Formula Weight: 364.3
Description
The disodium salt of gallein is called alizarin violet. Gallein is of little use as a simple acid dye. It has been suggested as a hematoxylin substitute when mordanted by iron alum. As with most mordant dyes, there is a strong shift in the absorption maximum, and the mordanted dye consequently stains nuclei blue violet.
References
- R. D. Lillie.
Conn’s Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A. - Edward Gurr, 1971
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England. - Susan Budavari, Editor,
The Merck Index, Ed. 12
Merck & Co., Inc., Whitehouse Station, NJ, USA
