What is potassium ferricyanide?
2025-09-24
Potassium ferricyanide is an inorganic compound with the chemical formula K₃[Fe(CN)₆], commonly known as red prussiate of potash or red blood salt. It has a molecular weight of 329.24 and appears as red crystals that are soluble in water. Its aqueous solution is yellow to yellow-green in color and contains the ferricyanide complex ion [Fe(CN)₆]³⁻.
| Identification | |
| Name | Potassium ferricyanide |
| Synonyms | Tripotassium hexacyanoferrate; Potassium hexacyanoferrate (III); Red prussiate; Potassium iron(III)cyanide |
| Molecular Formula | K3.[Fe(CN)6] |
| Molecular Weight | 329.24 |
| CAS Registry Number | 13746-66-2 (409-16-5) |
| Properties | |
| Density | 1.85 |
| Water solubility | 464 g/L (20 ºC) |
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