As listed in the 'PROPERTIES' section, the particle size is 21 nm by TEM and the surface area is 35-65 m2/g by BET.
718467
Titanium dioxide
nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis
Titanium(IV) oxide
Synonym(s):
Nanotitania, TiO₂ nanopowder, TiO2 nanopowder, Titanium(IV) oxide, Titania, Titanium dioxide
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About This Item
Linear Formula:
TiO2
CAS Number:
Molecular Weight:
79.87
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
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Product Name
Titanium(IV) oxide, nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis
Quality Level
assay
≥99.5% trace metals basis
form
nanopowder
surface area
35-65 m2/g , BET
primary particle size
21 nm (TEM)
mp
1850 °C
>350 °C (lit.)
density
4.26 g/mL at 25 °C (lit.)
SMILES string
O=[Ti]=O
InChI
1S/2O.Ti
InChI key
GWEVSGVZZGPLCZ-UHFFFAOYSA-N
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This Item | 14027 | 634662 | 14021 |
|---|---|---|---|
| form nanopowder | form powder | form nanopowder | form nanoparticles |
| assay ≥99.5% trace metals basis | assay 98.0-100.5%, 99-100.5%, 99.0-100.5% (calc. on dry substance) | assay 99.5% trace metals basis | assay ≥99% |
| mp 1850 °C, >350 °C (lit.) | mp >350 °C (lit.) | mp - | mp >350 °C (lit.) |
| density 4.26 g/mL at 25 °C (lit.) | density 4.26 g/mL at 25 °C (lit.) | density - | density 4.26 g/mL at 25 °C (lit.) |
| surface area 35-65 m2/g , BET | surface area - | surface area - | surface area - |
| primary particle size 21 nm (TEM) | primary particle size - | primary particle size - | primary particle size - |
General description
Our titanium(IV) oxide nanopowder is a fine white powder composed of titanium dioxide nanoparticles with an average particle size of 21 nm, resulting in a high surface area of 35-65 m2/g. Two main physico-chemically distinct polymorphs of TiO2 are anatase and rutile. Anatase has a higher photocatalytic activity than rutile but is thermodynamically less stable.[1]
Application
TiO2 nanoparticles were used to study the photocatalytic hexane vapor degradation.[2] It has been used as a sorbent for arsenic removal.[3] TiO2 nanoparticles are suitable for remediation of antiseptic components in wastewater by photocatalysis.[4] It has also been used to study adsorption of DNA oligonucleotides by titanium dioxide nanoparticles.[5]
Storage Class
13 - Non Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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Photocatalytic degradation of hexane vapors in batch and continuous systems using impregnated ZnO nanoparticles
Saucedo-Lucero JO and Arriaga S
Chemical Engineering Journal, 218, 358-367 (2013)
Xu Zhang et al.
Langmuir : the ACS journal of surfaces and colloids, 30(3), 839-845 (2014-01-07)
Titanium dioxide (TiO2) or titania shows great promise in detoxification and drug delivery. To reach its full potential, it is important to interface TiO2 with biomolecules to harness their molecular recognition function. To this end, DNA attachment is an important
Remediation of Antiseptic Components in Wastewater by Photocatalysis Using TiO2 Nanoparticles
Das R, et al.
Industrial & Engineering Chemistry Research, 53(8), 3012-3020 (2014)
Removal of arsenic from aqueous solution by two types of nano TiO2 crystals.
Ma L and Tu SX
Environmental Chemistry Letters, 9(4), 465-472 (2011)
Shanshan Zhang et al.
Archives of toxicology, 94(4), 1173-1190 (2020-03-13)
Titanium dioxide nanoparticles (TiO2NPs) have been widely used as food additives in daily life. However, the impact of oral intake of TiO2NPs on the nervous system is largely unknown. In this study, 7-week-old mice were treated with either vehicle or
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i wanted to know about the particle size and surface are (BET)
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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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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Is the TiO2 in rutile or anatase form in this specific product?
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The product 718467 has a mixed rutile/anatase phase. It is 80%/20% anatase/rutile.
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