This product originates from a natural origin and is not expected to contain any recycled content.
769290
Aluminum oxide
powder, ultra dry
Sustainability features
Synonym(s):
Alumina
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About This Item
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352311
EC Number:
215-691-6
MDL number:
eCl@ss:
38120507
Pricing and availability is not currently available.
Quality Segment
form
powder
composition
Al2O3
reaction suitability
core: aluminum
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product, Sustainability features
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%
application(s)
battery precursors
catalysts
crystal growth
glass & ceramic
optical coatings
photonic precursors
greener alternative category
, Enabling
SMILES string
O=[Al]O[Al]=O
InChI
1S/2Al.3O
InChI key
TWNQGVIAIRXVLR-UHFFFAOYSA-N
General description
We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Aluminum oxide serves as a multifunctional additive or coating in lithium-ion batteries, helping stabilize electrode–electrolyte interfaces, suppress side reactions, improve thermal stability, and extend cycle life. By enabling safer, longer-lasting cells, it reduces material waste and energy use across the battery lifecycle. Click here for more information.
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.
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This Item | |||
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| description powder, ultra dry | description fused, powder, primarily α-phase, 100-200 mesh | description pore size 58 Å, ~150 mesh | description pellets, 3 mm |
| particle size <0.063 mm, coeff var ≤28%, >2 mm, coeff var ≤2%, >0.063, coeff var ≥72% | particle size 100-200 mesh | particle size ~150 mesh | particle size 3 mm |
| form powder | form powder, fused | form powder | form pellets |
| mp 2040 °C (lit.) | mp 2040 °C (lit.) | mp 2040 °C (lit.) | mp 2040 °C (lit.) |
| cation traces As: ≤0.0005%, Fe: ≤0.02% | cation traces - | cation traces - | cation traces - |
| composition Al2O3 | composition - | composition - | composition - |
| reaction suitability core: aluminum | reaction suitability - | reaction suitability - | reaction suitability - |
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Storage Class
13 - Non Combustible Solids
WGK
nwg
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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Does this product include recycled content? Is some of the raw materials from recycling activities? If yes, what is the share of recycled content in the final aluminium oxide product?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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