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Acridine Red 3B

Acridine Red 3B

Class: Pyronin
Ionisation: Basic

Chemical structure of Acridine Red 3B

Common Name: Acridine red 3B
Suggested Name: Acridine red 3B
Other Names:

C.I. Number: 45000
C.I. Name:
Color: Red
Solubility Aqueous: Soluble
Solubility Ethanol: Soluble
Absorption Maximum: 547
Empirical Formula: C15H15N2OCl
Formula Weight: 274.76


This dye is not commonly used. It has been suggested for staining RNA in conjunction with malachite green in the Hitchcock Ehrich method for plasma cells, a method analogous to the unna-Pappenheim technique, which uses the closely related dye pyronin Y or pyronin B.

Compare the formula with other pyronins.


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