Azure C

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 C Azure C Methylene azure C 52002 – Thiazin Basic Readily Sparingly 616 (Aldrich) 607-610 (Conn) 608-622 (Merck) Blue C13H12N3SCl 277.8

Azure C is formed by the oxidation of Methylene blue and is strongly metachromatic. 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.

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

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