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.pdf
544833
Aluminum oxide
nanopowder, <50 nm particle size (TEM)
Sustainability features
Synonym(s):
Gamma Al2O3, Alumina
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
10 g | Available to ship TODAY | $46.50 |
50 g | Estimated to ship onNovember 25, 2026fromMILWAUKEE | $121.00 |
500 g | Estimated to ship onOctober 22, 2026 | $374.00 |
About This Item
$46.50
Available to ship TODAYDetails
description
gamma phase
Quality Segment
form
nanopowder
composition
Al2O3
reaction suitability
core: aluminum
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Sustainability features
surface area
>40 m2/g , BET
particle size
<50 nm (TEM)
mp
2040 °C (lit.)
application(s)
battery precursors
catalysts
glass & ceramic
perovskite solar cells
SMILES string
O=[Al]O[Al]=O
InChI
1S/2Al.3O
InChI key
TWNQGVIAIRXVLR-UHFFFAOYSA-N
General description
1 of 1
This Item | |||
|---|---|---|---|
| description nanopowder, <50 nm particle size (TEM) | description nanowires, diam. × L 2-6 nm × 200-400 nm | description activated, neutral, Brockmann Activity I | description fused, powder, primarily α-phase, 100-200 mesh |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 100 |
| form nanopowder | form nanowires | form powder | form fused, powder |
| mp 2040 °C (lit.) | mp 2040 °C (lit.) | mp 2040 °C (lit.) | mp 2040 °C (lit.) |
| greener alternative product characteristics Design for Energy Efficiency | greener alternative product characteristics Design for Energy Efficiency | greener alternative product characteristics Design for Energy Efficiency | greener alternative product characteristics Design for Energy Efficiency |
| particle size <50 nm (TEM) | particle size - | particle size 0.05-0.15 mm | particle size 100-200 mesh |
| reaction suitability core: aluminum | reaction suitability - | reaction suitability - | reaction suitability - |
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Storage Class
11 - Combustible Solids
WGK
nwg
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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What is the purity of this Al2O3 nanopowder?
1 answer-
The purity of this product is not determined. The presence of Aluminum is confirmed by ICP, but not quantified.
Please see the link below to review a sample Certificate of Analysis:
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/544833-BULKBCCK5282.pdfHelpful?
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