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| Iron(III) nitrate | |
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| IUPAC name | Iron(III) nitrate nonahydrate |
| Other names | Ferric nitrate |
| Identifiers | |
| CAS number | [7782-61-8] |
| RTECS number | NO7175000 |
| Properties | |
| Molecular formula | Fe(NO3)3·9H2O |
| Molar mass | 242 g/mol (anhydrous) |
| Appearance | Pale violet crystals |
| Density | 1.68 g/cm3, Solid |
| Melting point |
47.2°C |
| Solubility in other solvents | Soluble in Water, alcohol, acetone |
| Structure | |
| Coordination geometry |
octahedral |
| Hazards | |
| MSDS | External MSDS |
| Main hazards | Oxidizing Agent |
| NFPA 704 |
 2
3
0
|
| R-phrases | 8-36/37/38 |
| S-phrases | 17-26-36 |
| Related compounds | |
| Related compounds | FeCl3 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Iron(III) nitrate, or ferric nitrate, is the chemical compound with the formula Fe(NO3)3·9H2O. It forms colourless to pale violet crystals that are deliquescent; i.e., crystals form a pool of water if left in open to the atmosphere. The compound is prepared simply by treating iron metal or iron oxides with nitric acid.
Ferric nitrate is the catalyst of choice for the synthesis of sodium amide from a solution of sodium in ammonia:[1]
- 2NH3 + 2Na → 2NaNH2 + H2
Ferric nitrate supported on certain clays have been shown to be useful oxidants in organic synthesis. For example, this reagent, called "Clayfen" has been employed for the oxidation of alcohols to aldehydes and thiols to disulfides.[2]
Ferric nitrate solutions are used by jewelers and metalsmiths to more safely and cleanly etch silver and silver alloys.
References
- ^ Hampton, K. G. Harris, T. M.; Hauser, C. R. (1973). "2,4-Nonandione". Org. Synth.; Coll. Vol. 5: 848. As of 2007, 22 other entries describe similar preparations in Organic Syntheses
- ^ Cornélis, A. Laszlo, P.; Zettler, M. W. "Iron(III) Nitrate–K10 Montmorillonite Clay" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. DOI: 10.1002/047084289.
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