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637254

Sigma-Aldrich

Titanium(IV) oxide, anatase

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

Synonym(s):

TiO2 nanopowder, Titanium dioxide

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About This Item

Linear Formula:
TiO2
CAS Number:
1317-70-0
Molecular Weight:
79.87
EC Number:
215-280-1
MDL number:
MFCD00011269
UNSPSC Code:
12352302
PubChem Substance ID:
24882841
NACRES:
NA.23

Quality Level

100

Assay

99.7% trace metals basis

form

nanopowder

surface area

45-55 m2/g

particle size

<25 nm

mp

1825 °C (lit.)

density

3.9 g/mL at 25 °C (lit.)

bulk density

0.04‑0.06 g/mL

application(s)

battery manufacturing

SMILES string

O=[Ti]=O

InChI

1S/2O.Ti

InChI key

GWEVSGVZZGPLCZ-UHFFFAOYSA-N

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General description

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.Low optical scattering titania-acrylate nanocomposites have been reported. Metal contacts in solar cells based on titanium dioxide and di-(isothiocyanate)-bis-(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) have been studied.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What does "Trace Metal Basis" mean?

    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.

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

    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.

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

    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.

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

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

  8. What is the Department of Transportation shipping information for this product?

    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. 

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

    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.

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

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

  11. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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
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
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)
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