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
544884
Iron(III) oxide
nanopowder, <50 nm particle size (BET)
Sinónimos:
Ferric oxide
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description
crystalline (primarily γ)
Quality Level
form
nanopowder
surface area
50-245 m2/g
particle size
<50 nm (BET)
application(s)
battery manufacturing
SMILES string
O=[Fe]O[Fe]=O
InChI
1S/2Fe.3O
Inchi Key
JEIPFZHSYJVQDO-UHFFFAOYSA-N
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Categorías relacionadas
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Este artículo | 529311 | 371254 | 310050 |
|---|---|---|---|
| particle size <50 nm (BET) | particle size - | particle size 30-50 mesh | particle size <5 μm |
| form nanopowder | form powder | form powder | form powder |
| description crystalline (primarily γ) | description - | description - | description - |
| surface area 50-245 m2/g | surface area - | surface area - | surface area - |
| application(s) battery manufacturing | application(s) battery manufacturing | application(s) battery manufacturing | application(s) - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
General description
Application
Features and Benefits
- High theoretical specific capacity
- Biocompatibility
- Ease of coating and modification
- Non-toxicity
Clase de almacenamiento
13 - Non Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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Is it correct that the surface has no functional groups or coating and that bare iron oxide is exposed?
1 answer-
Yes, this product does not have any surface functionalization or coating, meaning that bare iron oxide is exposed.
Helpful?
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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
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What is the purity of Iron(III) oxide, Product 544884?
1 answer-
The purity of this product is not specifically stated on the certificate of analysis. However, an estimated purity can be determined based on the iron content. One mole of iron (III) oxide contains 2 moles (or 111.694g) of iron. The theoretical amount of iron present is approximately 69.94%. Purity can only be measured for a particular lot, which can be calculated based on the iron content determined for that lot. The ratio of the experimental content and the theoretical content, expressed as a percentage will be the purity of the particular lot. For example, an experimental result of 68.6% iron corresponds to a purity of 98.1%.
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What is the Department of Transportation shipping information for this product?
1 answer-
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.
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What form of iron (III) oxide is Product 544884?
1 answer-
Both the alpha-form and gamma-form are present in the mineral form naturally. This nanopowder is expected to be comprised of primarily the gamma-form, also known as maghemite.
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