Product No. 229423 is tested for the amount of specific metal impurities as described on both the specification sheet and the lot specific Certificate of Analysis. Both documents are available from our website. The percent purity is based on this trace metal analysis.
229423
Aluminum oxide
powder, 99.99% trace metals basis
Synonym(s):
Alumina
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25 G
₩204,726
100 G
₩581,392
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25 G
₩204,726
100 G
₩581,392
About This Item
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
EC Number:
MDL number:
UNSPSC Code:
12352311
eCl@ss:
38120402
PubChem Substance ID:
NACRES:
SB.52
Recommended Products
Quality Level
Assay
99.99% trace metals basis
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 (Al2O3), also known as alumina. It is commonly used in various rubber, plastics, ceramics, and refractory materials for reinforcement hardening. It can also be used as a filler or component in polymer or inorganic composite materials, as a catalyst or catalyst support, as an adsorbent, etc.
Application
Aluminum oxide is used as
- Filler for plastics and a common ingredient in sunscreen and many cosmetics.
- As a catalyst for alcohol dehydration in the Claus process.
- As a catalyst in the conversion of urea to ammonia.
Features and Benefits
Aluminum oxide has:
- High porosity
- High surface area
- Acidic and basic property
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Certificates of Analysis (COA)
Lot/Batch Number
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How is the purity of Product 229423, Aluminum oxide, determined?
1 answer-
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Is Product No. 229423, aluminum oxide, soluble in water?
1 answer-
No, aluminum oxide, is not soluble in water. However, aluminum oxide is slowly soluble in either acids or alkali.
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What is the particle size of the aluminum oxide, Product No. 229423?
1 answer-
Sigma does not determine the particle size of Product No. 229423. Neither is this part of our specifications. However, a vendor description for particle size for some lots in the past (including for lot MKBD5677) is the following: >100 mesh, 30%; >200 mesh, 80%; >325 mesh, 99%.
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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What is the surface area for Product 229423, Aluminum oxide?
1 answer-
Sigma does not determine the surface area of Product No. 229423, nor is this part of our specifications. However, a vendor description for surface area for some past lots (including for lot MKBD5677) is 50-60 m2/g.
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What other names are there for aluminum oxide, Product No. 229423?
1 answer-
Alumina oxide is also known as alumina.
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What is the crystalline phase of Product 229423, Aluminum oxide?
1 answer-
The crystalline phase of Product No. 229423 is alpha.
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