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229423

Sigma-Aldrich

Óxido de alúmina

powder, 99.99% trace metals basis

Sinónimos:

Alúmina

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25 G
MXP 2,559.00
100 G
MXP 7,273.00

MXP 2,559.00

Fecha estimada de envío17 de abril de 2025

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25 G
MXP 2,559.00
100 G
MXP 7,273.00

About This Item

Fórmula lineal:
Al2O3
Número de CAS:
1344-28-1
Peso molecular:
101.96
EC Number:
215-691-6
MDL number:
MFCD00003424
UNSPSC Code:
12352311
eCl@ss:
38120402
PubChem Substance ID:
329752360
NACRES:
SB.52

MXP 2,559.00

Fecha estimada de envío17 de abril de 2025

Solicitar un pedido a granel

Quality Level

100

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

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
MKCW5153
MKCV1862
0000282278
MKCQ5266
MKCJ8309

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Visite la Librería de documentos

Mobeen Murtaza et al.
Molecules (Basel, Switzerland), 25(18) (2020-09-26)
Water-based drilling fluids are extensively used for drilling oil and gas wells. However, water-based muds cause clay swelling, which severely affects the stability of wellbore. Due to two adsorption positions, it is expected that cationic gemini surfactants can reduce the
Dehydration of 2-butanol by a sulfated zirconia/γ-alumina mixed metal oxide catalyst inside a gas chromatograph injection port.
Skrdla PJ and Lindemann C.
Applied Catalysis A: General, 246(2), 227-235 (2003)
Prescott R and Graham MJ.
Oxidation of Metals, 38(3-4), 233-254 (1992)
Thermoanalytical studies of water on activated alumina, Brockmann I-V,(acid, neutral, basic) from- 60? to+ 700? C.
Hampson JW and Bleam WF.
Thermochimica Acta, 288(1), 179-189 (1996)
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

1–7 of 7 Questions  

  1. How is the purity of Product 229423, Aluminum oxide, determined?

    1 answer

    1. 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.

      Helpful?

  2. Is Product No. 229423, aluminum oxide, soluble in water?

    1 answer

    1. No, aluminum oxide, is not soluble in water.  However, aluminum oxide is slowly soluble in either acids or alkali.

      Helpful?

  3. What is the particle size of the aluminum oxide, Product No. 229423?

    1 answer

    1. 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%.

      Helpful?

  4. What is the Department of Transportation shipping information for this product?

    1 answer

    1. 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.

      Helpful?

  5. What is the surface area for Product 229423, Aluminum oxide?

    1 answer

    1. 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.

      Helpful?

  6. What other names are there for aluminum oxide, Product No. 229423?

    1 answer

    1. Alumina oxide is also known as alumina.

      Helpful?

  7. What is the crystalline phase of Product 229423, Aluminum oxide?

    1 answer

    1. The crystalline phase of Product No. 229423 is alpha.

      Helpful?

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