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
420816
LUDOX® HS-40 colloidal silica
40 wt. % suspension in H2O
Synonyme(s) :
Silica preparation
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About This Item
Produits recommandés
Description
colloidal
Niveau de qualité
Forme
viscous liquid
Concentration
40 wt. % suspension in H2O
Superficie
~220 m2/g
pH
9.8
Densité
1.3 g/mL at 25 °C
Chaîne SMILES
O=[Si]=O
InChI
1S/O2Si/c1-3-2
Clé InChI
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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Description générale
Application
- As a template for generating mesopores[3]
- As an excellent binder that binds catalyst components together and provides high mechanical strength without changing catalytic properties[4]
- As a substrate to enhance substrate adhesion in zeolites[5]
- In the preparation of nitrogen-doped carbon (NMC), which serves as catalyst support[6]
Informations légales
Code de la classe de stockage
12 - Non Combustible Liquids
Classe de danger pour l'eau (WGK)
nwg
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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Les clients ont également consulté
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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?
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 smallest size of the silica particles?
1 answer-
The Ludox products have an average particle size range of 7nm to 22nm. Please see the Ludox product comparison table below:
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