Potassium Ferrocyanide (K₄[Fe(CN)₆] · 3H₂O) Supplier in Europe

Gentrochema is a reliable European supplier of Potassium Ferrocyanide (K₄[Fe(CN)₆] · 3H₂O), a high-purity inorganic coordination compound widely used in industrial, laboratory, food-grade, and technical applications. We provide consistent product quality, REACH-compliant supply, and efficient logistics throughout Europe for customers who require dependable sourcing and regulatory assurance.

What is Potassium Ferrocyanide?

Potassium ferrocyanide, with the chemical formula K₄[Fe(CN)₆] · 3H₂O, is a yellow crystalline compound that is highly soluble in water. The product is also known as potassium hexacyanoferrate(II) trihydrate and is recognized for its excellent chemical stability and controlled reactivity under neutral and alkaline conditions.

The substance is commonly supplied as a trihydrate (3 H₂O), meaning that water molecules are incorporated into the crystal structure. This hydrated form contributes to the product’s stability and handling characteristics in industrial and technical applications.

Despite containing cyanide ligands, potassium ferrocyanide is considered a stable coordination complex under normal industrial handling conditions due to the strong bonding between iron and cyanide ions. However, under strongly acidic conditions and elevated temperatures, hazardous decomposition products such as hydrogen cyanide gas may be released.

Applications of Potassium Ferrocyanide

Potassium ferrocyanide is used in a wide range of industrial and technical sectors. In analytical chemistry and laboratory environments, it is widely applied as a reagent for redox reactions and iron detection methods, including the well-known Prussian blue staining process.

In pigment manufacturing, potassium ferrocyanide plays an important role as a precursor for the production of Prussian Blue pigments, which are widely used in inks, coatings, technical blueprints, and industrial coloring applications.

The compound is also used in metal treatment processes, electroplating applications, and specialty chemical synthesis where controlled ferrocyanide chemistry is required. Additionally, potassium ferrocyanide is applied in selected textile, laboratory, and research applications.

Potassium ferrocyanide is also widely used in Europe as a food-grade anti-caking agent in salt, where it is known as E536. In this application, small quantities are added to table salt and industrial salt products to prevent clumping and improve free-flowing properties during storage and handling.

Our food-grade Potassium Ferrocyanide E536 complies with the current applicable European food additive legislation, including Regulation (EC) No. 1333/2008 and Regulation (EU) No. 231/2012. The product is available with a particle size distribution of 0 – 1000 micron.

Potassium Ferrocyanide supplied by Gentrochema is also available with Kosher certification, and a Halal declarationis available upon request.

In the wine industry, potassium ferrocyanide has historically been used for blue fining treatments, an oenological process applied to reduce excessive concentrations of iron and copper in wine and improve product stability.

Potassium ferrocyanide is furthermore applied in iron flow battery energy storage systems, an emerging technology for large-scale energy storage. In these battery systems, ferro-/ferricyanide compounds function as electroactive components in aqueous redox flow batteries. Due to their high solubility, stable electrochemical behavior, and long cycle life, these compounds are considered promising materials for sustainable energy storage and grid stabilization applications. More information about these applications can be found on our page about
👉 Ferrocyanide Compounds for Iron-Flow Battery Energy Storage.

Potassium ferrocyanide has historically also been used in cyanotype photographic processes and remains relevant in certain specialty imaging and blueprint applications.

Regulatory & Safety Information

Potassium ferrocyanide should be handled in accordance with standard industrial chemical safety procedures. Under normal storage and usage conditions, the product is considered stable and presents limited risk when handled correctly.

The substance should be stored in a dry, well-ventilated environment and kept away from strong acids, excessive heat, and incompatible materials. Contact with acids may release toxic hydrogen cyanide gas. Appropriate personal protective equipment, including gloves, safety goggles, and adequate ventilation, is recommended during handling.

Potassium Ferrocyanide supplied by Gentrochema is fully compliant with the REACH Regulation EC 1907/2006.

Gentrochema BV holds a full REACH registration covering all known identified uses of Potassium Ferrocyanide.

Packaging & Logistics

Potassium ferrocyanide is supplied in suitable industrial packaging designed for safe handling and transport in accordance with applicable regulations. The minimum order quantity is 25 kg, with packaging options suitable for industrial, laboratory, and food-grade applications.

Potassium Ferrocyanide is available for delivery throughout Europe, with global supply available upon request.

Why Choose Gentrochema

Gentrochema ensures that potassium ferrocyanide is supplied according to strict quality and regulatory standards. As a REACH registered supplier, we guarantee full compliance with European chemical legislation and provide customers with confidence in product traceability and supply reliability.

By choosing Gentrochema, you benefit from a trusted European chemical supplier with consistent quality, competitive pricing, and customer-focused service. Our team is committed to reliable delivery solutions and long-term partnerships.

Request a Quote

For more information, technical specifications, or a quotation for Potassium Ferrocyanide, feel free to contact our team. We are happy to support your requirements with fast response times and flexible supply solutions.

👉 info@gentrochema.nl
👉 www.gentrochema.nl