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Gallamin blue

Gallamin blue

Class: Oxazin
Ionisation: Basic

Chemical structure of Gallamin blue

Common Name: Gallamin blue
Suggested Name: Gallamin blue
Other Names:

C.I. Number: 51045
C.I. Name: Mordant blue 45
Color: Blue
Solubility Aqueous:
Solubility Ethanol:
Absorption Maximum: 651
Empirical Formula: C15H14N3O4Cl
Formula Weight: 335.7


Gallamin blue has been used as a hematoxylin substitute, with iron alum as the mordant, in the H&E stain.


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