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237973

Sigma-Aldrich

Aluminum nitrate nonahydrate

ACS reagent, ≥98%

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Synonym(s):
Aluminium nitrate
Linear Formula:
Al(NO3)3 · 9H2O
CAS Number:
7784-27-2
Molecular Weight:
375.13
EC Number:
236-751-8
MDL number:
MFCD00149132
UNSPSC Code:
12352300
PubChem Substance ID:
329752504
NACRES:
NB.24

grade

ACS reagent

Quality Level

200

Assay

≥98%
98.0-102.0% (ACS specification)

form

crystals

reaction suitability

reagent type: catalyst
core: aluminum

impurities

≤0.005% insolubles

pH

2.5-3.5 (25 °C, 50 g/L)

mp

73 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Ca: 0.005%
Fe: ≤0.002%
K: 0.002%
Mg: 0.001%
Na: 0.005%
heavy metals: ≤0.001% (by ICP-OES)

SMILES string

O.O.O.O.O.O.O.O.O.[Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O

InChI

1S/Al.3NO3.9H2O/c;3*2-1(3)4;;;;;;;;;/h;;;;9*1H2/q+3;3*-1;;;;;;;;;

InChI key

SWCIQHXIXUMHKA-UHFFFAOYSA-N

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General description

Aluminum nitrate nonahydrate is an aluminum salt that can be prepared by dissolving aluminum or aluminum hydroxide in dilute nitric acid. It is used in the preparation of insulating papers, transformer core laminates, and cathode-ray tube heating elements.

Application

Aluminum nitrate nonahydrate can be used as a catalyst to synthesize:
  • β-Amino carbonyl compounds via one-pot Mannich reaction.
  • Bis(indolyl)methanes via electrophilic substitution reaction of indoles with aromatic aldehydes.
  • 3,4-Dihydropyrimidinones via solvent-free Biginelli reaction.

Features and Benefits

  • Easily recoverable through simple phase separation
  • Reusable without a distinct loss of catalytic activity

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H318

Precautionary Statements

P280 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Mechanism of thermal decomposition and ?-pyrolysis of aluminum nitrate nonahydrate [Al (NO3)3? 9H2O].
El-Shereafy E, et al.
J. Radioanal. Nucl. Chem., 237(1-2), 183-186 (1998)
Okada et al.
Journal of colloid and interface science, 219(1), 195-200 (1999-10-21)
Amorphous aluminosilicate xerogels with various chemical compositions were prepared by coprecipitation, and their surface acidity and hydrophilicity were investigated by NH(3) gas temperature programed desorption (TPD), water vapor adsorption-desorption isotherms, and (27)Al magic angle spinning nuclear magnetic resonance (MAS NMR).
Preparation of mullite fibers from aluminum isopropoxide-aluminum nitrate-tetraethylorthosilicate solutions by sol-gel method.
Song KC.
Materials Letters, 35(5), 290-296 (1998)
Effect of preparation conditions on the porous properties of coprecipitated Al2O3-SiO2 xerogels synthesized from aluminium nitrate nonahydrate and tetraethylorthosilicate.
Okada K, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 37(3), 355-364 (2000)
Macro-micro relationship in nanostructured functional
Composites
Zanotto A, et al.
Express Polymer Letters, 6(5), 410-416 (2012)
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