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

Dissolve the ounce of potassium ferricyanide in 10 ounces of water.

From Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements by Tennant, John A.

I have here in solution uranium nitrate, plus potassium ferricyanide acidified with acetic acid.

From Spawn of the Comet by Rich, H. Thompson (Harold Thompson)

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