Tartrazine

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
Tartrazine
Tartrazine
Acid yellow T
Hydrazine yellow
19140
Acid yellow 23
Azo
Acid
Soluble
Sparing
425 (Conn), 422 (Gurr)
Yellow
C16H9N4O9S2Na3
534.385

Tartrazine is often used as a saturated solution in cellosolve (2-ethoxy ethanol) as the displacement dye to replace other (red) acid dyes while the tissue from which the other dye has been removed is stained yellow. Lendrum's phloxine tartrazine method for Paneth cell granules is a good example. It is rarely employed for other purposes, although it contrasts very well as a background stain with nuclei stained by nuclear fast red.

 

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.

 


 

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