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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Example Sentences

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

The reaction is rendered more sensitive if alcohol is carefully poured on the solution after it has been rendered alkaline, and potassium ferricyanide is then added.

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

Prepare a fresh solution, as needed each day, by dissolving a crystal of potassium ferricyanide about the size of a pin's head in 25 cc. of distilled water.

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

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.