1817 T. Thomson (ed. 5) I. 566 Ferrocyanate of potash throws down a white precipitate, which is redissolved by muriatic acid.
1912 Aug. 292 Cyanide of potassium is a deadly poison, but ferrocyanate of potassium is harmless.
2009 106 18412/2 The specimens were postfixed in 1.5% osmium tetroxide..with 0.7% potassium ferrocyanate.