POTASSIUM FERROCYANIDE CHINA
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CAS number: 13943-58-3, (anhydrous), 14459-95-1 (trihydrate)
PubChem: 161067
EU Contents: Not listed
R-phrases: R32, R52, R53
S-phrases: S50 (B), S61
Molecular formula: C6N6FeK4
Molar mass: 368,35 g / mol (anhydrous), 422,388 g / mol (trihydrate)
Appearance: Light yellow, crystal granules.
Density: 1.85 g / cm3 (trihydrate)
Melting point: 69-71 ° C
Boiling point: 400 ° C (Decay)
Solubility in water: 28.9 g / 100 ml (20 ° C)
Solubility: insoluble in ethanol, ether
Other names: tetrapotassium ferrocyanide, 4 - ferrate tetrapotassium
General Information
The chemical formula of C6N6FeK4 is a yellow crystalline granular which is used as an additive in the salts obtained from nature. still used as an additive
Production and Reactions
Treatment with nitric acid gives potassium ferrocyanide and H2. Upon treatment with chlorine gas, potassium ferricyanide converts potassium ferrocyanide:
2 K4 [Fe (CN) 6] Cl2? 2 K3 [Fe (CN) 6] 2 KCI
Usage areas
Virgin
It is used in the separation of molybdenum from copper ores.
food
Potassium ferrocyanide is used in the production of wine and citric acid.
Chemistry
It is used in the determination of the compound used in titration in the laboratory environment ferrocyanide potassium, permanganate concentration etc. substances.
Agriculture
Potassium can also be used as fertilizer for ironed plants.