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199923

Sigma-Aldrich

Lanthanum(III) oxide

99.99% trace metals basis

Synonym(s):

Dilanthanum trioxide, Lanthana, Lanthanum oxide, Lanthanum sesquioxide, Lanthanum trioxide, Lanthanum(3+) oxide

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100 G
$212.00
500 G
$579.04

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100 G
$212.00
500 G
$579.04

About This Item

Linear Formula:
La2O3
CAS Number:
Molecular Weight:
325.81
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23

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$212.00


In StockDetails


Shipping Frequency
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Quality Level

assay

99.99% trace metals basis

form

powder

reaction suitability

reagent type: catalyst
core: lanthanum

density

6.51 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[La]O[La]=O

InChI

1S/2La.3O

InChI key

KTUFCUMIWABKDW-UHFFFAOYSA-N

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This Item
2035561.109821.12220
form

powder

form

powder

form

-

form

solid

assay

99.99% trace metals basis

assay

99.999% trace metals basis

assay

-

assay

≥99.5% (the ignited basis substance, complexometric)

density

6.51 g/mL at 25 °C (lit.)

density

6.51 g/mL at 25 °C (lit.)

density

6.51 g/cm3 at 20 °C

density

6.51 g/cm3 at 20 °C

reaction suitability

reagent type: catalyst
core: lanthanum

reaction suitability

reagent type: catalyst
core: lanthanum

reaction suitability

-

reaction suitability

-

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

-

application(s)

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

200

General description

La2O3 is a wide band gap p-type semiconductor with an empty Ln-4f shell and is widely used to prepare optical materials, dielectrics, and conductive ceramics. La2O3 can also be used as a catalyst in many organic transformations.

Application

Lanthanum(III) oxide can be used as a dopant to prepare radiation-shielding glasses. For example, it can be added to waste soda-lime glass to improve the linear attenuation coefficient and radiation shielding characteristics of the glass.

It can be used as a recyclable catalytic system for the synthesis of diphenyl sulfides and selenides and for the C-N cross-coupling of aryl halides with heteroaromatic amines.

It can also be used as a promoter or support material for the selective oxidation of methanol over gold catalyst.
Precursor to LAMOX fast ion conductors and superconductors.

Features and Benefits

  • High refractive index
  • Low dispersion
  • Colorless in the glass matrix
  • Efficient, inexpensive, and recyclable catalyst

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Questions

1–4 of 4 Questions  
  1. 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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  2. 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/449/386/product-dating-information-mk.pdf

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  3. What is the particle size of Product 199923?

    1 answer
    1. The particle size for this product has not been determined. However, historical information indicates that it is greater than 1 µm.

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  4. What is the particle size of this product?

    1 answer
    1. The particle size for this product has not been determined. Historical information indicates only that it is >1 um.

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