The Collaborative International Dictionary
Ferrocyanide \Fer`ro*cy"a*nide\ (? or ?; 104), n. [Ferro- + cyanide.] (Chem.) One of a series of complex double cyanides of ferrous iron and some other base.
Potassium ferrocyanide (Chem.), yellow prussiate of potash; a tough, yellow, crystalline salt, K4(CN)6Fe, the starting point in the manufacture of almost all cyanogen compounds, and the basis of the ferric ferrocyanate, prussian blue. It is obtained by strongly heating together potash, scrap iron, and animal matter containing nitrogen, as horn, leather, blood, etc., in iron pots.
WordNet
n. a cyanide comound that is prepared by the reaction of potassium cyanide with ferrous salts; commonly used by gardeners [syn: yellow prussiate of potash]
Wikipedia
Potassium ferrocyanide is the inorganic compound with formula K[Fe(CN)] ยท 3HO. It is the potassium salt of the coordination complex [Fe(CN)]. This salt forms lemon-yellow monoclinic crystals.
Usage examples of "potassium ferrocyanide".
This light was no more than a mixture of luminol and sodium hydroxide in water, with potassium ferrocyanide and hydrogen peroxide added.
Such pimento, to render it more attractive, is then often artificially coloured with bole or brown ochre, a sophistication which may be detected by boiling for a few seconds with diluted hydrochloric acid, filtering and testing with potassium ferrocyanide.
While the Bush administration was publicly decrying Hussein's use of chemical weapons on the Kurds, the potassium ferrocyanide was shipped to Iraq to manufacture chemical weapons for Iraq's army, with the full knowledge and complicity of the Bush administration.