Prussian blue
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| Chemical formula | Fe7(CN)18 |
|---|---|
| OTP appearance | indigo/purple crystals |
| Molar Mass(g/mol) | 859.24 |
| Melting Point(°C) | 250 (decomp) |
| NFPA 704 |  0
0
0
|
Uses
Justification Questioned
Primary
- WHO LEM heavy metal chelation agent
Other
- pigment
Natural occurrence
- does not occur naturally
Hazards
Production
Extraction
Synthesis
Combine potassium ferrocyanide with iron (III) chloride
- 3 K4Fe(CN)6 + 4 FeCl3 → Fe7(CN)18 + 12 KCl