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414069

Sigma-Aldrich

Aluminum oxide

pellets, 3 mm

Synonym(s):

Alumina

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About This Item

Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
EC Number:
MDL number:
UNSPSC Code:
12000000
PubChem Substance ID:
NACRES:
SB.52

form

pellets

particle size

3 mm

mp

2040 °C (lit.)

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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General description

Aluminum oxide (alumina) is a common raw material for ceramic materials. It is a good electrical insulator that shows stability at high temperature and resistance to chemicals. Alumina is an important source for aluminum and has been prepared from high-alumina ladle furnace refining slag. It is reported to enhance the reaction rate of aldose to ketose conversion by Lobry de Bruyn–Alberda van Ekenstein transformation. It is a key constituent of NOx storage catalysts (NSC) which is employed to get rid of nitrogen oxides from the exhaust gas of lean burn engines. A study of the surface passivation characteristics of aluminium oxide on crystalline silicon shows many advantages which can be applied in silicon solar cell production.

Application

Aluminum oxide may be used as a dopant to produce optical fiber amplifiers and high-power fiber lasers.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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High contrast laser marking of alumina.
Penide J, et al.
Applied Surface Science, 336, 118-128 (2015)
Study on the mechanism of the reaction of NO2 with aluminium oxide.
Apostolescu N, et al.
Applied Catalysis. B, Environmental, 51(1), 43-50 (2004)
Alumina extraction from high-alumina ladle furnace refining slag.
Zhou Y, et al.
Hydrometallurgy, 140, 14-19 (2013)
Alumina as a dopant in optical fiber by OVD.
Wang J.
Applied Physics. A, Materials Science & Processing, 116(2), 505-518 (2014)
Advances in the surface passivation of silicon solar cells.
Schmidt J, et al.
Energy Procedia, 15, 30-39 (2012)

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