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Updating {{chembox}} (no changed fields - added verified revid - updated 'UNII_Ref', 'ChemSpiderID_Ref', 'StdInChI_Ref', 'StdInChIKey_Ref') per Chem/Drugbox validation (report [[Wikipedia_talk:Wi
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| SMILES = [Al+3].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O
| SMILES = [Al+3].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O
| InChIKey = JLDSOYXADOWAKB-UHFFFAOYAJ
| InChIKey = JLDSOYXADOWAKB-UHFFFAOYAJ
| StdInChI = 1S/Al.3NO3/c;3*2-1(3)4/q+3;3*-1
| StdInChIKey = JLDSOYXADOWAKB-UHFFFAOYSA-N
| CASNo = 13473-90-0
| CASNo = 13473-90-0
| CASNo_Ref = {{cascite}}
| CASNo_Ref = {{cascite|correct|CAS}}
| CASOther = <br/>7784-27-2 (nonahydrate)
| CASOther = <br/>7784-27-2 (nonahydrate)
| PubChem = 26053
| PubChem = 26053

Revision as of 11:34, 29 November 2010

Aluminium nitrate
Names
IUPAC name
Aluminium nitrate
Other names
Nitric acid, aluminum salt
aluminum nitrate
aluminium(III) nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.396 Edit this at Wikidata
RTECS number
  • BD1040000 (anhydrous)
    BD1050000 (nonahydrate)
  • InChI=1S/Al.3NO3/c;3*2-1(3)4/q+3;3*-1
    Key: JLDSOYXADOWAKB-UHFFFAOYSA-N
  • InChI=1/Al.3NO3/c;3*2-1(3)4/q+3;3*-1
    Key: JLDSOYXADOWAKB-UHFFFAOYAJ
  • [Al+3].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
Al(NO3)3
Molar mass 212.996 g/mol (anhydrous)
375.134 g/mol (nonahydrate)
Appearance white solid
hygroscopic
Odor odorless
Density 1.72 g/cm3 (nonahydrate)
Melting point 72.8 °C (nonahydrate)
Boiling point 135 °C (nonahyrdate, decomp.)
anhydrous:
60.0 g/100 mL (0°C)
73.4 g/100 mL (20 °C)
160 g/100 mL (100 °C)
nonahydrate:
67.3 g/100 mL
Solubility in methanol 14.45 g/ 100mL
Solubility in ethanol 8.63 g/ 100mL
Solubility in ethylene glycol 18.32 g/100 mL
1.54
Hazards
NFPA 704 (fire diamond)
Flash point 135 °C (nonahydrate)
Lethal dose or concentration (LD, LC):
4280 mg/kg, oral (rat)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Aluminium nitrate is a salt of aluminium and nitric acid, existing normally as a crystalline hydrate, most commonly as aluminium nitrate nonahydrate, Al(NO3)3·9H2O, with a molecular formula weight of 327.124 g/mol.

Preparation

Aluminium nitrate cannot be made by adding aluminium to nitric acid, as the aluminium forms a passivation layer.

To make aluminium nitrate, just add nitric acid to aluminium trichloride, and the by-product, nitrosyl chloride, will bubble out of the solution.

Aluminum nitrate nonahydrate can also be made by adding a lead nitrate solution to an aluminum sulfate solution. The insoluble lead sulfate is precipitated out of the solution, leaving a solution of aluminum nitrate.

Uses

Aluminium nitrate is a strong oxidizing agent. It is used in tanning leather, antiperspirants, corrosion inhibitors, extraction of uranium, petroleum refining, and as a nitrating agent.

The nonahydrate and other hydrated aluminum nitrates have many applications. These salts are used to produce alumina for preparation of insulating papers, in cathode tube heating elements, and on transformer core laminates. The hydrated salts are also used for the extraction of actinide elements.[1]

It is used in the laboratory and classroom such as in the reaction:

Al(NO3)3 + 3NaOH → Al(OH)3 + 3NaNO3

References

  1. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398

External links


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