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Class: Azo
Ionisation: Acid

Chemical structure of Azophloxine

Common Name: Azophloxine
Suggested Name: Azophloxine
Other Names:

Amidonaphthol red G

C.I. Number: 18050
C.I. Name: Acid red 1
Color: Red
Solubility Aqueous: Soluble
Solubility Ethanol: Soluble
Absorption Maximum: 540, 502(Conn), 532, 506 (Aldrich)
Empirical Formula: C18H13N3O8S2Na2
Formula Weight: 509.44


This dye is rarely called for, although Goldner suggested it as an alternate plasma stain in his trichrome.


  1. R. D. Lillie.
    Conn’s Biological Stains
    Williams & Wilkins, Baltimore, MD., U.S.A.
  2. Aldrich chemical catalogue, 1992
    Aldrich Chemical Company, Milwaukee, WI, USA.