potassium ferricyanide

American  

noun

Chemistry.

1. a bright-red, crystalline, water-soluble, poisonous solid, K 3 Fe(CN) 6 , used chiefly in the manufacture of pigments, as Prussian blue, and of paper, especially blueprint paper.

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potassium ferricyanide

Cyanotype is a photographic medium that uses ferric ammonium citrate, potassium ferricyanide, and simple sunlight to make an image.

From Scientific American ● Dec. 23, 2011

In most cases a blue coloration will appear; the addition of 1-2 drops of potassium ferricyanide solution with formation of a blue coloration indicates the presence of Neradol ND without fail.

From Synthetic Tannins by Grasser, Georg

If the film is then plunged into solution of potassium ferricyanide it becomes red or blue, while the lines traced show by their different reaction that they consist of ordinary silver.

From Scientific American Supplement, No. 832, December 12, 1891 by Various

Wool is dyed by heating it in a solution containing potassium ferricyanide and sulphuric acid.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

A drop of the oxidized solution should be tested on a watch-glass with potassium ferricyanide, to insure a complete oxidation.

From An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes by Talbot, Henry P.