15 Chromogen/Metal Indicator

Cyanoline Blue

Metal Indicator

  • Product code
    C017  Cyanoline Blue
  • Chemical name
    Composite preparation of monopyrazolone and bispyrazolone
Unit size Price Item Code
25 g C017-10

Product Description

Cyanoline Blue is a mixture of monopyrazolone and bispyrazolone. It is used as a colorimetric reagent for CN- detection. The detection range of CN- by this method is 5 ppb to 10 ppm. The maximum wavelength is 620 nm. A ready-to-use solution can be prepared by dissolving 0.27 g Cyanoline Blue in 20 ml pyridine, followed by dilution with 100 ml of water. The solution is stable for one week at 4 oC. Cyanoline Blue is also used to detect SCN-, OCN-, NH3, and vitamin B12.


Open References

1) J. M. Kruse and M. G. Mellon, "Colorimetric Determination of Cyanide and Thiocyanate", Anal. Chem.195325, 446. 
2) L. Prochazkova, "Spectrophotometric Determination of Ammonia as Rubazoic Acid with Bispyrazolone Reagent", Anal. Chem.196436, 865. 
3) S. Baar, "The Micro Determination of Cyanide: Its Application to the Analysis of Whole Blood", Analyst196691, 268

Handling and storage condition

Appearance: White to pale yellow powder
Solubility in Pyridine: To pass test (clear, colorless or slightly yellow)
Sensitivity: To pass test
Handling and storage condition
Ambient temperature

Product Classification

Product Classification

Search word