Orange II

Orange II
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
Orange II
Orange II

15510
Acid orange 7
Azo
Acid
5%
Soluble
484 (Merck), 483 (Aldrich)
Orange
C16H11N2NaO4S
350.33

Orange II is not commonly used in medical histotechnology. Lillie has recommended it as a substitute for Orange G in Pearse’ PAS Orange G method for demonstrating pituitary α and β cells because it is a darker orange.

 

Susan Budavari (Editor), (1996)
Merck Index, Ed. 12
Merck & Co., London, New Jersey, USA.

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

 


 

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