Common Name: Bismarck brown
Suggested Name: Bismarck brown Y
Other Names:
Manchester brown Phenylene brown
C.I. Number: 21000
C.I. Name: Basic brown 1
Color: Brown
Solubility Aqueous: 1.36%
Solubility Ethanol: 1.36%
Absorption Maximum: 463 (Conn), 457 (Aldrich)
Empirical Formula: C18H20N8Cl2
Formula Weight: 419.336
Description
More commonly used in the past than it is now, Bismarck brown Y is a metachromatic dye which stains acid mucins yellow. It is also a constituent of Papanicolaou's EA solutions, used for cervical, and other, smears.
References
- 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,
The Merck Index, Ed. 12
Merck & Co., Inc., Whitehouse Station, NJ, USA