K6CN12Fe2

Ferricyanide Fer`ri*cy"a*nide (?; 104), n. [Ferri- + cyanide.] (Chem.) One of a complex series of double cyanides of ferric iron and some other base. [1913 Webster]

{Potassium ferricyanide} (Chem.), red prussiate of potash; a dark, red, crystalline salt, {K6(CN)12Fe2}, consisting of the double cyanide of potassium and ferric iron. From it is derived the ferrous ferricyanate, Turnbull's blue. [1913 Webster]