Orange G

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 Orange G Orange G – 16230 Acid orange 10 Azo Acid 10.86% 0.22% 472 (Gurr), 475 (Aldrich), 476-480 (Conn) Orange C16H10N2O7S2Na2 452.386

Orange G is a valuable acid dye used in many staining methods, including Papanicolauo's OG6 stain. It is often combined with other yellow dyes in alcoholic solution to stain erythrocytes in trichrome methods, and is used for demonstrating cells in the pancreas and pituitary.

 

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

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

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