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
769290
Aluminum oxide
powder, ultra dry
Sinonimo/i:
Alumina
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About This Item
Prodotti consigliati
Livello qualitativo
Stato
powder
Area superficiale
120-190 m2/g
Impurezze
≤0.5% substances extractable by water
Perdita
≤1.0% loss on ignition
Dimensione particelle
>0.063, coeff var ≥72%
<0.063 mm, coeff var ≤28%
>2 mm, coeff var ≤2%
Punto di fusione
2040 °C (lit.)
Densità bulk
950‑1100 g/L
Anioni in tracce
chloride (Cl-): ≤0.015%
sulfate (SO42-): ≤0.05%
Cationi in tracce
As: ≤0.0005%
Fe: ≤0.02%
Stringa SMILE
O=[Al]O[Al]=O
InChI
1S/2Al.3O
TWNQGVIAIRXVLR-UHFFFAOYSA-N
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Categorie correlate
Applicazioni
Codice della classe di stoccaggio
13 - Non Combustible Solids
Classe di pericolosità dell'acqua (WGK)
nwg
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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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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