Abstract
POTASSIUM ferri- and ferro-cyanide are extensively used as oxidizing and reducing reagents respectively, or as buffer systems in the study of the oxidation-reduction potentials of hæmoproteins and other biological compounds. It was shown, however, by Schönbein and some other workers, especially Baudisch and Bass1, that these reagents easily undergo photodecomposition accompanied by the liberation of a certain amount of cyanide. Solutions of these reagents must therefore be not only freshly prepared, but also well protected from light, especially when used for the study of hæmoproteins which may have high affinities for cyanide, forming with it well-defined complexes.
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References
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KEILIN, D. Precautions in the Use of Ferri- or Ferro-cyanide for the Study of Hæmoproteins. Nature 190, 717–718 (1961). https://doi.org/10.1038/190717a0
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DOI: https://doi.org/10.1038/190717a0
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