Potassium Hexacyanoferrate III — Sodium Hydroxide Reagent

Dipping solution First dissolve 10 mg potassium hexacyanoferrate(III) and then 1 g sodium hydroxide pellets in 7 ml water and then dilute the solution with 20 ml ethanol. 

Storage The dipping solution should be prepared fresh before use, since 

Potassium hexacyanoferrate(III) forms, for example, fluorescent thiochrome with vitamin Bi  

The developed chromatograms are dried in a stream of warm air for 1 min, then after cooling they are immersed in the reagent solution for 1 s and dried again in a stream of warm air for 30 s. 

The dipping solution can also be used as a spray solution other concentrations are also reported in the literature [1 — 3], 

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