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
211575
Cerium oxide
powder, <5 μm, 99.9% trace metals basis
Synonym(s):
Cerium(IV) oxide, Ceric oxide, Ceric oxide, ceria
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€73.30
€258.00
About This Item
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Product Name
Cerium(IV) oxide, powder, <5 μm, 99.9% trace metals basis
Quality Level
Assay
99.9% trace metals basis
form
powder
reaction suitability
reagent type: catalyst
core: cerium
greener alternative product characteristics
Design for Energy Efficiency
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particle size
<5 μm
density
7.13 g/mL at 25 °C (lit.)
greener alternative category
SMILES string
O=[Ce]=O
InChI
1S/Ce.2O
InChI key
CETPSERCERDGAM-UHFFFAOYSA-N
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This Item | 202975 | 544841 | 1.02263 |
|---|---|---|---|
| assay 99.9% trace metals basis | assay 99.995% trace metals basis | assay - | assay - |
| form powder | form powder | form nanopowder | form solid |
| particle size <5 μm | particle size - | particle size <25 nm (BET) | particle size - |
| density 7.13 g/mL at 25 °C (lit.) | density 7.13 g/mL at 25 °C (lit.) | density 7.13 g/mL at 25 °C (lit.) | density 7.3 g/cm3 at 20 °C |
| reaction suitability reagent type: catalyst | reaction suitability reagent type: catalyst | reaction suitability reagent type: catalyst | reaction suitability - |
| 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 - |
General description
Application
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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How can I determine the shelf life / expiration / retest date of this product?
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粒子形状に関する質問です。211575の酸化セリウムは球状でしょうか。
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This material has a particle size specification of <5 μm. The lot specific particle size is reported in the product Certificate of Analysis. However, the particle shape has not been determined and may not be in spherical form. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/aldrich/211575#product-documentationHelpful?
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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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