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Alizarin Blue

Alizarin Blue

Ionisation: Acid

Chemical structure of Alizarin Blue

Common Name: Alizarin blue
Suggested Name: Alizarin blue
Other Names:

Alizarin blue R

C.I. Number: 67410
C.I. Name:
Color:
Solubility Aqueous: Almost insoluble
Solubility Ethanol: Almost insoluble
Absorption Maximum:
Empirical Formula: C17H9NO4
Formula Weight: 291.3

Description

Alizarin blue is used primarily as an indicator. Between pH 0.0 and pH 1.6 it changes from pink to yellow, and between pH 6.0 and pH 7.6 it changes from yellow to green.

Do not confuse this indicator with the dye alizarin blue 2RC, CI 58605, more commonly known as anthracene blue SWR.

References

  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