Gallein

Gallein

Alizarin violet

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
Gallein
Alizarin violet

45445
Mordant violet 25
Fluorone
Acid
Poor
Poor
526 (Gurr)
Brown yellow
C20H12O7
364.3

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.

 

Reference
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, (1996)
The Merck Index, Ed. 12
Merck & Co., Inc., Whitehouse Station, NJ, USA

 


 

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