TiO2 powders are generally considered to be hydrophilic, with anatase polymorphs being more so than rutile. Uncoated TiO2 powders such as this one also have more hydrophilic properties than inorganic- or organic-coated powders. Anatase has a high surface energy, which contributes to its ability to interact favorably with water molecules. This high energy facilitates the adsorption of water, leading to a hydrophilic surface. The presence of surface defects and the formation of hydroxyl groups (–OH) on the anatase surface enhance its affinity for water. The arrangement of Ti and O atoms in the tetragonal crystal structure allows for a more reactive surface compared to other polymorphs like rutile, which may have a more stable but less reactive surface.
637254
Oxyde de titane(IV), anatase
nanopowder, <25 nm particle size, 99.7% trace metals basis
Synonyme(s) :
Dioxyde de titane
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226,00 €
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About This Item
226,00 €
Produits recommandés
Essai
99.7% trace metals basis
Forme
nanopowder
Superficie
45-55 m2/g
Taille des particules
<25 nm
Pf
1825 °C (lit.)
Densité
3.9 g/mL at 25 °C (lit.)
Masse volumique apparente
0.04‑0.06 g/mL
Application(s)
battery manufacturing
Chaîne SMILES
O=[Ti]=O
InChI
1S/2O.Ti
Clé InChI
GWEVSGVZZGPLCZ-UHFFFAOYSA-N
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Catégories apparentées
Description générale
Application
Code de la classe de stockage
13 - Non Combustible Solids
Classe de danger pour l'eau (WGK)
nwg
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
dust mask type N95 (US), Eyeshields, Gloves
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Certificats d'analyse (COA)
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Is this product hydrophilic or lipophilic? If it exhibits that property, could you please explain the reason behind it?
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Is this product a high-purity anatase phase TiO2 or Is it possible that the rutile phase is also included?
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This is a high purity anatase phase. There should not be rutile phase present.
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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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Are the NP silanized? Do they need to be activated by UV for antimicrobial property?
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This product is packaged in glass vials and will not be salinized. Titanium (IV) oxide nanopowder has been proved to be the most active photocatalytic semiconductor under ultraviolet radiation. Ultraviolet (UV) light-mediated activation of titanium dioxide (TiO2) cleans the surface microenvironment through photocatalysis.
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What possible solvents can be used with Titanium(IV) oxide, anatase - nanopowder?
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According to the chemicals encyclopedia published by the Royal Society of Chemistry (13th ed.), titanium (IV) oxide is soluble in hot, concentrated sulfuric acid and hydrofluoric acid. It is insoluble in water, hydrochloric acid, and nitric acid.
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What is the Department of Transportation shipping information for this product?
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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 does "Trace Metal Basis" mean?
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For this product, the purity is determined by testing total metallic impurities. Our specifications only allow for a maximum of 1000 ppm. On the Certificate of Analysis, you will be able to see which metals were tested and the amount.
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What is the average particle size of Product 637254, Titanium(IV) oxide, anatase - nanopowder?
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Lot history shows that the average particle size of this product is about 5 nm. The batch-specific average will be reported on the certificate of analysis.
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What is the morphology of Product 637254, Titanium(IV) oxide, anatase - nanopowder?
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According to the supplier, the morphology of this product is expected to be spherical.
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