Chrome Violet CG

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
Chrome violet CG
Chrome violet CG
Aluminon
Eriochrome cyanin R
Alizarol cyanin R
43810
Mordant violet 39
Triphenylmethane
Acid
Soluble
Insoluble
525 (Aldrich)
Red
C22H11O9Na3
488.3

This dye has been used to demonstrate aluminum deposits. Care should be taken with its identification as the supplying companies use the names eriochrome cyanin R and alizarol cyanin R for another dye, CI 43820, but Conn gives these two names as synonyms for this compound.

The name aluminon is given to the ammonium salt rather than the sodium salt shown, and the name aurintricarboxylic acid is given to the free acid, sometimes with the addendum sodium salt or ammonium salt for chrome violet CG and aluminon respectively.

 

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

Aldrich chemical catalogue, 1992
Aldrich Chemical Company, Milwaukee, WI, USA.

 


 

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