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Sigma-Aldrich

Aluminum oxide

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gamma phase, nanopowder, 5 nm avg. part. size, 99.95% trace metals basis

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Synonym(s):
γ-Al2O3, Cubic aluminium oxide, Gamma-alumina, Gamma-aluminum(III) oxide, Alumina
Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
MDL number:
MFCD00003424

Quality Level

100

Assay

99.95% trace metals basis

form

nanopowder

composition

Al2O3

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

avg. part. size

5 nm

particle size

5 nm

mp

2040 °C (lit.)

bulk density

0.18 g/cm3

application(s)

battery manufacturing

greener alternative category

Enabling

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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General description

Gamma-phase Al2O3 is one of the several crystalline phases of aluminum oxide, also known as alumina. It has a cubic crystal structure with a high degree of symmetry, characterized by a closely packed arrangement of oxygen and aluminum ions, and tends to be highly porous. Our aluminum oxide nanopowder in the gamma phase is a high-purity product with 99.95% purity and an average particle size of 5 nm. This nanopowder is characterized by its high surface area, excellent dielectric properties, and resistance to corrosion and wear. Our aluminum oxide nanopowder is produced using advanced manufacturing techniques, ensuring uniform particle size and high purity.
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Application

Our gamma phase alumina nanopowder is useful in a variety of applications. Its high purity and small particle size make it an excellent catalyst and catalyst-support for chemical reactions, including dehydration, isomerization, hydrogenation, oxidation, reforming, and Fischer-Tropsch synthesis. Because of its porosity, it has many uses in pharmaceutical and industrial manufacturing processes as an adsorbent and desiccating agent. In addition, gamma-phase Al2O3 is a widely used material in the field of electronics due to its high dielectric constant, low dielectric loss, and excellent electrical insulation properties. Its ability to store electrical charge, retain its properties over a wide range of frequencies, and withstand high voltages make it an ideal choice for use in a wide range of electronic components, including capacitors, insulators, transformers, and high-frequency and high-voltage applications. The nanopowder′s hardness and stability make it suitable for use in wear-resistant coatings, and its resistance to corrosion and oxidation makes it a reliable material for high-temperature environments.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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