potassium ferrocyanide

American  

noun

Chemistry.

1. a lemon-yellow, crystalline, water-soluble solid, K 4 Fe(CN) 6 ⋅3H 2 O, used chiefly in casehardening alloys having an iron base and in dyeing wool and silk.

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potassium ferrocyanide British  

noun

1. Also called: potassium hexacyanoferrate (II).   yellow prussiate of potash.  a yellow soluble crystalline compound used in case-hardening steel and making dyes and pigments. Formula: K 4 Fe(CN) 6

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Example Sentences

He extensively used potassium ferrocyanide to bleach detail into dark areas.

From Seattle Times • Jan. 20, 2018

He admonished them for sending their spies to a foreign country equipped with “soap made of potassium ferrocyanide or toilet water that contains lead acetate.”

From Scientific American • Apr. 5, 2014

Upon further investigation, however, authorities learned that the chemical appeared to be potassium ferrocyanide, which is not lethal when diluted in water.

From Time Magazine Archive

Titrate the boiling solution with the sodium phosphate till it ceases to give a brown colouration with potassium ferrocyanide.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

Ammonium chloride in a potassium ferrocyanide solution produces growths shaped like catkins, and the alkaline chlorides tend to produce vermiform growths.

From The Mechanism of Life by Leduc, Stéphane