Alizarin Blue

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
 Alizarin blue
Alizarin blue
Alizarin blue R
67410
–
Anthraquinone
Acid
Almost insoluble
Sparing
–
–
C17H9NO4
291.3

Alizarin blue is used primarily as an indicator. Between pH 0.0 and pH 1.6 it changes from pink to yellow, and between pH 6.0 and pH 7.6 it changes from yellow to green.

Do not confuse this indicator with the dye alizarin blue 2RC, CI 58605, more commonly known as anthracene blue SWR.

 

Reference
R. D. Lillie.
Conn's Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A.

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

 


 
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Last updated May 2005.