Iron(III) nitrate
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| Iron(III) nitrate | |
|---|---|
-nitrate-nonahydrate-sample.jpg) |
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| IUPAC name |
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| Other names | Ferric nitrate Nitric acid, iron(3+) salt |
| Identifiers | |
| CAS number | [], 13476-08-9 (hexahyrdate) 7782-61-8 (nonahydrate) |
| PubChem | |
| RTECS number | NO7175000 |
| Properties | |
| Molecular formula | Fe(NO3)3 |
| Molar mass | 241.86 g/mol (anhydrous) 403.999 g/mol (nonahydrate) |
| Appearance | Pale violet crystals hygroscopic |
| Density | 1.68 g/cm3 (nonahydrate) |
| Melting point |
47.2 °C (nonahydrate) |
| Solubility in water | very soluble |
| Solubility in alcohol, acetone | soluble |
| Structure | |
| Coordination geometry |
octahedral |
| Hazards | |
| MSDS | External MSDS |
| Main hazards | Oxidizing agent |
| NFPA 704 |
 1
1
0
OX
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| Related compounds | |
| Related compounds | Iron(III) chloride Iron(III) sulfate |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
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Iron(III) nitrate, or ferric nitrate, is the chemical compound with the formula Fe(NO3)3. Since it is deliquescent, it is commonly found in its nonahydrate form Fe(NO3)3·9H2O in which it forms colourless to pale violet crystals. The compound is prepared by treating iron metal or iron oxides with nitric acid.
Contents |
[edit] Applications
[edit] In the chemical laboratory
Ferric nitrate is the catalyst of choice for the synthesis of sodium amide from a solution of sodium in ammonia:[1]
- 2 NH3 + 2 Na → 2 NaNH2 + H2
Certain clays impregnated with ferric nitrate have been shown to be useful oxidants in organic synthesis. For example, ferric nitrate on Montmorillonite—a reagent called "Clayfen"—has been employed for the oxidation of alcohols to aldehydes and thiols to disulfides.[2]
[edit] Other applications
Ferric nitrate solutions are used by jewelers and metalsmiths to etch silver and silver alloys.
[edit] Gallery
 The nonahyrdate of Iron (III) nitrate |
[edit] 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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