Potassium ferricyanide
General Product Information
| Article | Potassium ferricyanide |
| Synonyms |
Potassium hexacyanoferrate(III), Prussian red |
| CAS No. | 13746-66-2 |
| EEG No. | – |
| EINECS No. | 237-323-3 |
| IMO | Class 9 |
| Tariff Code | 28372000 |
| UN No. | 3077 |
| VLG/ADR | Class 9, Packing Group III |
Description
Potassium ferricyanide, also known as Prussian red, is an inorganic compound belonging to the group of cyanocomplexes. It is a red, crystalline powder that is highly soluble in water. In commercial and industrial applications, it is known as a stable oxidizing reagent, suitable for use in analytical chemistry, water purification, Photography and Metalworking, among others.
Characteristics
- Odor: Odorless.
- Hygroscopic: –
- Color: Red to orange.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure. | K3[Fe(CN)6] |
| Molar Weight | 329.24 g/mol |
| Melting Point | – |
| Boiling Point | – |
| Density | 1.822 g/cm³ |
| Refractive Index | – |
| pH. | Approx. 7 (on 1% solution). |
Applications
Potassium ferricyanide is applied in various ways, for instance:
1. Analytical Chemistry
It is often used for the detection of iron(II) ions by forming a deep blue compound (Prussian blue or Turnbull’s blue).
2. Water Treatment
Used at the precipitation of heavy metals from industrial wastewater.
3. Electronics & Engraving
As a component in etchants for circuit boards and other metal surfaces….
4. Photography
Traditionally used in photographic development processes because of its oxidative properties.
Interessing Links
- CAS Common Chemistry – Potassium ferricyanide
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Potassium ferricyanide – Chemical information by the National Library of Medicine der National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Potassium ferricyanide