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637254

Sigma-Aldrich

Oxyde de titane(IV), anatase

nanopowder, <25 nm particle size, 99.7% trace metals basis

Synonyme(s) :

Dioxyde de titane

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50 G
239,00 $
100 G
442,00 $
500 G
546,00 $

239,00 $

Disponible pour expédition le15 avril 2025Détails

Devis pour commande en gros
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50 G
239,00 $
100 G
442,00 $
500 G
546,00 $

About This Item

Formule linéaire :
TiO2
Numéro CAS:
1317-70-0
Poids moléculaire :
79.87
Numéro CE :
215-280-1
Numéro MDL:
MFCD00011269
Code UNSPSC :
12352302
ID de substance PubChem :
24882841
Nomenclature NACRES :
NA.23

239,00 $

Disponible pour expédition le15 avril 2025Détails

Devis pour commande en gros

Niveau de qualité

100

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

Our titanium(IV) oxide, anatase nanopowder is a fine white powder composed of titanium dioxide nanoparticles with a particle size less than 25 nm. Anatase is a metastable polymorph of TiO2, which is less hard and less dense than the rutile polymorph. Optically, anatase nanopowder has a lower refractive index, absorbs less UV light, and exhibits greater photocatalytic activity than the rutile polymorph. Consequently, anatase is often preferred in applications where photocatalytic activity is desired, such as self-cleaning surfaces and solar cells.

Application

Titania paste may be used as a transparent coating for self cleaning glass.[1]Low optical scattering titania-acrylate nanocomposites have been reported.[2] Metal contacts in solar cells based on titanium dioxide and di-(isothiocyanate)-bis-(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) have been studied.[3]

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

Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number
MKCX4517
0000424034
0000424015
0000424015
0000424034

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Mojca Pavlin et al.
International journal of molecular sciences, 23(11) (2022-06-11)
Alongside physiochemical properties (PCP), it has been suggested that the protein corona of nanoparticles (NPs) plays a crucial role in the response of immune cells to NPs. However, due to the great variety of NPs, target cells, and exposure protocols
TiO2-Acrylate Nanocomposites Elaborated by UV-Curing with Tunable Properties.
Burunkova JA, et al.
Solid State Phenomena, 200, 173-177 (2013)
Preparation of small particles of titanium (IV) oxide
Mohs CR and Klabunde KJ
Nanophase Materials, 260, 121-124 (1994)
Cell cycle synchronization reveals greater G2/M-phase accumulation of lung epithelial cells exposed to titanium dioxide nanoparticles
Medina-Reyes, et al.
Environmental Science and Pollution Research International, 1-7 (2014)
Saher Fatima et al.
Pharmaceutics, 13(10) (2021-10-24)
Multi-drug resistant (MDR) bacterial cells embedded in biofilm matrices can lead to the development of chronic cariogenesis. Here, we isolated and identified three Gram-positive MDR oral cocci, (1) SJM-04, (2) SJM-38, and (3) SJM-65, and characterized them morphologically, biochemically, and
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Questions

1–10 of 12 Questions  

  1. Is this product hydrophilic or lipophilic? If it exhibits that property, could you please explain the reason behind it?

    1 answer

    1. 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.

      Helpful?

  2. Is this product a high-purity anatase phase TiO2 or Is it possible that the rutile phase is also included?

    1 answer

    1. This is a high purity anatase phase. There should not be rutile phase present.

      Helpful?

  3. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

      Helpful?

  4. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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

      Helpful?

  5. Are the NP silanized? Do they need to be activated by UV for antimicrobial property?

    1 answer

    1. 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.

      Helpful?

  6. What is the morphology of Product 637254, Titanium(IV) oxide, anatase - nanopowder?

    1 answer

    1. According to the supplier, the morphology of this product is expected to be spherical.

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  7. What is the solubility of Product 637254, Titanium(IV) oxide, anatase - nanopowder?

    1 answer

    1. We do not test the solubility of this product. However, according to the chemicals encyclopedia published by the Royal Society of Chemistry, 13th edition, this product is insoluble in water, HCl, HNO3 and dilute H2SO4. It is soluble in hot concentrated H2SO4 and hydrofluoric acid.

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  8. How is Titanium(IV) oxide, anatase - nanopowder, Product 637254, manufactured?

    1 answer

    1. According to the manufacturer, product 637254 is produced by a process of calcination at 300°C.

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  9. What is the average particle size of Product 637254, Titanium(IV) oxide, anatase - nanopowder?

    1 answer

    1. 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.

      Helpful?

  10. What possible solvents can be used with Titanium(IV) oxide, anatase - nanopowder?

    1 answer

    1. 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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1–10 of 12 Questions  

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