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769290

Sigma-Aldrich

Aluminum oxide

powder, ultra dry

Synonym(s):

Alumina

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About This Item

Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
EC Number:
215-691-6
MDL number:
MFCD00003424
UNSPSC Code:
12352311
PubChem Substance ID:
329767437
NACRES:
NA.23

Quality Level

100

form

powder

surface area

120-190 m2/g

impurities

≤0.5% substances extractable by water

loss

≤1.0% loss on ignition

particle size

>0.063, coeff var ≥72%
<0.063 mm, coeff var ≤28%
>2 mm, coeff var ≤2%

mp

2040 °C (lit.)

bulk density

950‑1100 g/L

anion traces

chloride (Cl-): ≤0.015%
sulfate (SO42-): ≤0.05%

cation traces

As: ≤0.0005%
Fe: ≤0.02%

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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Application

Owing to its high hardness, chemical stability and thermal conductivity, alumina finds applications as filler for metals and plastics. It also finds applications in paints, polisher and cosmetics.

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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