Iron(III) nitrate

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Iron(III) nitrate
IUPAC name Iron(III) nitrate nonahydrate
Other names Ferric nitrate
Identifiers
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RTECS number NO7175000
Properties
Fe(NO3)3·9H2O
Molar mass 404 g/mol
Appearance Pale violet crystals
Density 1.68 g/cm3, Solid
Melting point
Solubility in other solvents Soluble in Water, alcohol, acetone
Structure
Coordination
geometry
octahedral
Hazards
Main hazards Oxidizing Agent
R-phrases 8-36/37/38
S-phrases 17-26-36
Related compounds
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

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

  1. 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
  2. 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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ar:نترات حديد ثلاثي de:Eisen(III)-nitrat sv:Järnnitrat


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