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

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)

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

The prints in Prussian blue are produced in a similar manner, the sensitive salt with which the calico is prepared being ammonium ferricitrate, and the developer potassium ferricyanide.

From Scientific American Supplement, No. 810, July 11, 1891 by Various

They combine readily with the alkyl iodides to form alkyl acridinium iodides, which are readily transformed by the action of alkaline potassium ferricyanide to N-alkyl acridones.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg