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718475

Aluminum oxide

greener alternative

nanopowder, 13 nm primary particle size (TEM), 99.8% trace metals basis

Synonym(s):

Aluminia, Alumina

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About This Item

Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
PubChem Substance ID:
329763581
eCl@ss:
38120402
UNSPSC Code:
12352303
NACRES:
NA.23
EC Number:
215-691-6
MDL number:
MFCD00003424
Assay:
99.8% trace metals basis
Form:
nanopowder

Key Documents

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InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

InChI

1S/2Al.3O

SMILES string

O=[Al]O[Al]=O

assay

99.8% trace metals basis

form

nanopowder

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

surface area

85-115 m2/g , BET

primary particle size

13 nm (TEM)

mp

2040 °C (lit.)

greener alternative category

Enabling

Quality Level

100

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1 of 4

This Item
934062642991544833
Aluminum oxide nanopowder, 13 nm primary particle size (TEM), 99.8% trace metals basis

Sigma-Aldrich

718475

Aluminum oxide

Aluminum oxide alpha phase, nanopowder, 135 nm avg. part. size, 99.9% trace metals basis

Sigma-Aldrich

934062

Aluminum oxide

Aluminum oxide nanoparticles, 30-60 nm particle size (TEM), 20 wt. % in H2O

Sigma-Aldrich

642991

Aluminum oxide

Aluminum oxide nanopowder, <50 nm particle size (TEM)

Sigma-Aldrich

544833

Aluminum oxide

assay

99.8% trace metals basis

assay

99.9% trace metals basis

assay

-

assay

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

200

form

nanopowder

form

nanopowder

form

dispersion, liquid (suspension), nanoparticles

form

nanopowder

mp

2040 °C (lit.)

mp

2040 °C (lit.)

mp

-

mp

2040 °C (lit.)

surface area

85-115 m2/g , BET

surface area

-

surface area

-

surface area

>40 m2/g , BET

primary particle size

13 nm (TEM)

primary particle size

-

primary particle size

-

primary particle size

-

General description

Aluminum oxide nanoparticles (AlNPs) are porous nanomaterials with corundum-like structures. They possess high surface area, mechanical strength, and good optical properties. In addition, they have excellent chemical stability in harsh conditions such as abrasive environments and high temperatures. The ease of surface modification and bioinertess make them suitable for biomedical applications. These nanomaterials can be prepared by a cost-effective and simple protocol.
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

Aluminum nanoparticles can be used to prepare:
  • Water-based nanofluids, which are used in engine cooling, heat exchangers, and nuclear cooling system. In graphene oxide/alumina nanofluid, the addition of aluminum nanoparticles improves the physical structure of graphene oxide and reduces the viscosity of the composite.
  • Polysiloxane-aluminum oxide composites, applicable as an elastomeric thermal pad for light-emitting diodes.
It can also be used as an additive to improve the mechanical properties of polyvinyl chloride. The Al2O3 nanoparticles act as a solid inert phase in the polymer matrix and restrict the mobility of chains. As a result glass transition temperature increases and elastic modulus decreases.

Features and Benefits

  • Stable in a harsh non-biological environment.
  • They can be easily prepared through established synthesis methods.
  • A vast surface area allows conjugation with chemical and biological molecules.
  • Their surface modification protocols are straightforward.
  • They can easily interact with biological interfaces.

Storage Class

13 - Non Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKDB1517
MKCZ2359
MKCV8124
MKCR0745
MKCN1394

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Laura M Corredor et al.
Nanomaterials (Basel, Switzerland), 9(1) (2019-01-16)
Recent studies revealed higher polymer flooding performance upon adding metal oxide nanoparticles (NPs) to acrylamide-based polymers during heavy oil recovery. The current study considers the effect of TiO₂, Al₂O₃, in-situ prepared Fe(OH)₃ and surface-modified SiO₂ NPs on the performance of
Shuo Yang et al.
Sensors (Basel, Switzerland), 19(14) (2019-07-25)
Readily available temperature sensing in boilers is necessary to improve efficiencies, minimize downtime, and reduce toxic emissions for a power plant. The current techniques are typically deployed as a single-point measurement and are primarily used for detection and prevention of
Joohoon Kang et al.
ACS nano, 9(4), 3596-3604 (2015-03-19)
Solution dispersions of two-dimensional (2D) black phosphorus (BP)--often referred to as phosphorene--are achieved by solvent exfoliation. These pristine, electronic-grade BP dispersions are produced with anhydrous organic solvents in a sealed-tip ultrasonication system, which circumvents BP degradation that would otherwise occur
Chien-Chih Lin et al.
Nanoscale, 5(17), 8090-8097 (2013-07-25)
We demonstrated a promising route for enhancing temperature sensitivity, improving saturation voltage, and reducing power consumption of the MOS(p) tunneling temperature sensors by introducing ultrathin Al2O3 into the dielectric stacks. Detailed illustrations of the working mechanism and device concept are
Jaakko Akola et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(25), 10129-10134 (2013-06-01)
Glass formation in the CaO-Al2O3 system represents an important phenomenon because it does not contain typical network-forming cations. We have produced structural models of CaO-Al2O3 glasses using combined density functional theory-reverse Monte Carlo simulations and obtained structures that reproduce experiments
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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