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A1522

Sigma-Aldrich

Aluminum oxide

Type WN-6, Neutral, Activity Grade Super I

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Synonym(s):
Alumina
Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
EC Number:
215-691-6
MDL number:
MFCD00003424
eCl@ss:
38120402
PubChem Substance ID:
329770713
NACRES:
SB.52

Quality Level

200

type

Type WN-6, Neutral

form

powder

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, Al2O3), a metal oxide, is a common raw material for manufacturing ceramics. It is a good electrical insulator that shows stability at high temperature and resistance to chemicals. Alumina is an important source for aluminum and can be prepared from high-alumina ladle furnace refining slag. It can 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 are employed to get rid of nitrogen oxides from the exhaust gas of lean burn engines. Its surface passivation characteristics on crystalline silicon makes it a vaiable candidate in silicon solar cell production.

Application

Aluminum oxide was used in the disposable alumina columns, to determine the adenylyl cyclase (AC) activity during the interaction of 2,3-O-(2,4,6-trinitrophenyl)-substituted nucleoside 5-triphosphates (TNP-NTPs)with VC1:IIC2 (purified catalytic subunits of membranous AC). It 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

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Srividya Suryanarayana et al.
The Journal of pharmacology and experimental therapeutics, 330(3), 687-695 (2009-06-06)
Adenylyl cyclases (ACs) catalyze the conversion of ATP into the second messenger cAMP and play a key role in signal transduction. In a recent study (Mol Pharmacol 70:878-886, 2006), we reported that 2',3'-O-(2,4,6-trinitrophenyl)-substituted nucleoside 5'-triphosphates (TNP-NTPs) are potent inhibitors (K(i)
Nonlinear relaxational polarization in aluminum oxide.
Kankate L, et al.
IEEE Transactions on Dielectrics and Electrical Insulation, 22(2), 1220-1231 (2015)
High contrast laser marking of alumina.
Penide J, et al.
Applied Surface Science, 336, 118-128 (2015)
Alumina extraction from high-alumina ladle furnace refining slag.
Zhou Y, et al.
Hydrometallurgy, 140, 14-19 (2013)
Aldose-ketose interconversion in pyridine in the presence of aluminium oxide.
Ekeberg D, et al.
Carbohydrate Research, 342(14), 1992-1997 (2007)
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