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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.pdf
637254
Titanium dioxide, anatase
nanopowder, <25 nm particle size, 99.7% trace metals basis
Greener Alternative
Synonym(s):
Nanotitania, TiO2 nanopowder, Titania, Titanium(IV) oxide, anatase, Titanium dioxide
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
50 g | Available to ship TODAYfromMILWAUKEE | $209.00 |
100 g | Available to ship TODAYfromMILWAUKEE | $400.00 |
500 g | Available to ship TODAYfromMILWAUKEE | $416.00 |
About This Item
$209.00
Available to ship TODAYDetails
Product Name
Titanium(IV) oxide, anatase, nanopowder, <25 nm particle size, 99.7% trace metals basis
Quality Segment
assay
99.7% trace metals basis
form
nanopowder
composition
TiO2
reaction suitability
core: titanium
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
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
catalysts
glass & ceramic
perovskite solar cells
greener alternative category
SMILES string
O=[Ti]=O
InChI
1S/2O.Ti
InChI key
GWEVSGVZZGPLCZ-UHFFFAOYSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| description nanopowder, <25 nm particle size, 99.7% trace metals basis | description powder, 99.8% trace metals basis | description powder, −325 mesh, ≥99% trace metals basis | description nanopowder, <100 nm particle size (BET), 99.5% trace metals basis |
| assay 99.7% trace metals basis | assay 99.8% trace metals basis | assay ≥99% trace metals basis | assay 99.5% trace metals basis |
| particle size <25 nm | particle size - | particle size −325 mesh | particle size <50 nm (XRD), <100 nm (BET) |
| form nanopowder | form powder | form powder | form nanopowder |
| density 3.9 g/mL at 25 °C (lit.) | density 3.9 g/mL at 25 °C (lit.) | density 3.9 g/mL at 25 °C (lit.) | density - |
| mp 1825 °C (lit.) | mp 1825 °C (lit.) | mp 1825 °C (lit.) | mp - |
| composition TiO2 | composition TiO2 | composition TiO2 | composition TiO2 |
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flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
Storage Class
11 - Combustible Solids
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How can I determine the shelf life / expiration / retest date of this product?
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Can we use this product as ETL layer for perovskite solar cells.
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This product can be used in photovoltaic applications. However, it has not been tested for use as an ETL for perovskite solar cells. Titanium dioxide in the anatase phase is commonly used for this purpose.
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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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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.
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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 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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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 is the solubility of Product 637254, Titanium(IV) oxide, anatase - nanopowder?
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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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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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How is Titanium(IV) oxide, anatase - nanopowder, Product 637254, manufactured?
1 answer-
According to the manufacturer, product 637254 is produced by a process of calcination at 300°C.
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What is the morphology of Product 637254, Titanium(IV) oxide, anatase - nanopowder?
1 answer-
According to the supplier, the morphology of this product is expected to be spherical.
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