Potassium Ferrocyanide

Anti-Caking Agent: Used in table salt and road salt to prevent moisture absorption and lumping during storage.
Mineral Flotation: Serves as a depressant in the mining industry for the separation of copper from molybdenum ores.
Pigment Production: A primary raw material for the production of high-quality blue iron pigments used in inks and paints.

Yellow Prussiate of Potash, Potassium Hexacyanoferrate(II), E536.

CAS: 13943-58-3
EC: 237-722-2
Sectors: Food & Nutrition, Mining & Metals

Potassium Ferrocyanide (CAS 13943-58-3), also known as yellow prussiate of potash, is a lemon-yellow crystalline salt supplied as a Food Grade (E536) anti-caking agent and a Technical Grade reagent for ore refinement, pigment production and metal surface treatment. It is characterized by its lemon-yellow crystalline structure and excellent stability, ensuring powdered food products remain free-flowing and clump-free.

In industrial sectors, it is utilized as a Technical Grade reagent for the refinement and separation of metallic ores. Despite containing cyanide groups, the compound is extremely stable and does not release toxic cyanide under normal handling conditions or standard processing environments.

The product is highly soluble in water and acts as a critical precursor for the manufacturing of pigments like Prussian Blue. Its role as a mild reducing agent makes it valuable in chemical synthesis and metal surface treatments where controlled oxidation is required.

Typical Properties

Molecular formula	C₆FeN₆.4K
Molecular weight	1058.24 g/mol
Melting point	70 °C
Boiling point	104.2 °C
Density	1.886 g/cm³
Water solubility	254g/L at 20°C
GHS signal word	Warning · Environmental hazard
Grades available	Food Grade, Technical Grade

Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.

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