Azure B

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 Azure B Azure B Methylene azure B 52010 – Thiazin Basic Soluble Sparingly 651 (Gurr) 648-655 (Merck) 648 (Aldrich) Blue C15H16N3SCl 305.8

Azure B is formed by the oxidation of Methylene blue and is strongly metachromatic. It is used for making azure eosin stains for blood smear staining. Compare the formulae of the three azures and methylene blue.

 

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

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

Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.

Susan Budavari, Editor, (1996)
The Merck Index, Ed. 12
Merck & Co., Inc., Whitehouse Station, NJ, USA

Azure B 25g
246-142-25G	$33.75