14434-22-1

CAS Nr.:

14434-22-1

Ferrate(4-), hexakis(cyano-C)-, tetrasodium, decahydrate (OC-6-11)-

EINECS Name:

Ferrate(4-), hexakis(cyano-C)-, tetrasodium, decahydrate (OC-6-11)-

680-419-9

EINECS Nr.:

680-419-9

Natriumhexacyanoferrat(II) Decahydrat / Natriumferrocyanid

Synonym:

Natriumhexacyanoferrat(II) Decahydrat / Natriumferrocyanid

Natriumhexacyanoferrat (Sodium hexacyanoferrate), auch bekannt als Natriumferrocyanid, ist eine chemische Verbindung mit der Summenformel Na4[Fe(CN)6]. Diese Substanz spielt eine wichtige Rolle in der chemischen Industrie und zeichnet sich durch besondere physikalische Eigenschaften aus, die sie für verschiedene Anwendungen prädestinieren.

Physical Properties of Sodium Hexacyanoferrate

Sodium hexacyanoferrate appears as a yellow, crystalline powder. It is highly soluble in water, forming a clear, yellowish solution. The solubility in water is about 45 g/100 ml at 20°C. The compound has a density of approximately 1.458 g/cm³. Sodium hexacyanoferrate is stable and non-flammable. At higher temperatures, it decomposes, releasing toxic gases such as hydrogen cyanide and nitrogen oxides. It is essential to store the substance under dry conditions to prevent decomposition.

Applications of Sodium Hexacyanoferrate

In the food industry, sodium hexacyanoferrate is used as an anti-caking agent, particularly in table salt and salt substitutes. It prevents the formation of clumps and ensures that the salt remains free-flowing. In the European Union, it is approved as a food additive under the code E535 and is subject to strict safety regulations.

Sodium hexacyanoferrate is widely used as a reagent in analytical chemistry. It is employed for the detection of iron ions (Fe²⁺ and Fe³⁺) and other metal ions in various samples. Due to its specific reactions, it is a valuable tool in the qualitative and quantitative analysis of metals in laboratory investigations.

In water treatment, sodium hexacyanoferrate plays an important role as a flocculant. It helps remove heavy metals and other contaminants from wastewater and drinking water. By forming insoluble complexes, pollutants can be effectively filtered out from the water, leading to improved water quality.

Another significant application of sodium hexacyanoferrate is in electroplating. It is used as a complexing agent to keep metal ions in solution and to produce uniform, high-quality metal coatings on various substrates. This is particularly important in the manufacture of electronics and decorative coatings.

In conclusion, sodium hexacyanoferrate is an important raw material in various industries due to its physical properties and versatile applications. Whether in the food industry, analytical chemistry, water treatment, or electroplating, this chemical compound contributes significantly to technological and industrial advancements.