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Nuclear Fast Red

Nuclear Fast Red

Ionisation: Acid

Chemical structure of Nuclear Fast Red

Common Name: Nuclear fast red
Suggested Name: Nuclear fast red
Other Names:

Kernechtrot Calcium red Helio fast rubin BBL

C.I. Number: 60760
C.I. Name:
Solubility Aqueous: 0.25%
Solubility Ethanol: 0.25%
Absorption Maximum: 518 (Aldrich)
Empirical Formula: C14H8NO7SNa
Formula Weight: 357.28


According to Conn, Nuclear fast red has not been specifically identified, but is considered to be this dye. It forms bright red lakes with calcium, and a useful red nuclear staining lake with aluminum.


  1. R. D. Lillie.
    Conn’s Biological Stains
    Williams & Wilkins, Baltimore, MD., U.S.A.
  2. Susan Budavari, Editor,
    The Merck Index, Ed. 12
    Merck & Co., Inc., Whitehouse Station, NJ, USA
  3. Aldrich chemical catalogue, 1992
    Aldrich Chemical Company, Milwaukee, WI, USA.