Common Name: Orange II
Suggested Name: Orange II
Other Names:
–
C.I. Number: 15510
C.I. Name: Acid orange 7
Color: Orange
Solubility Aqueous: 5%
Solubility Ethanol: 5%
Absorption Maximum: 484 (Merck), 483 (Aldrich)
Empirical Formula: C16H11N2NaO4S
Formula Weight: 350.33
Description
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.
References
- Susan Budavari (Editor), (1996)
Merck Index, Ed. 12
Merck & Co., London, New Jersey, USA. - Aldrich chemical catalogue, 1992
Aldrich Chemical Company, Milwaukee, WI, USA.