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.pdf
791547
Titania paste, transparent
Synonym(s):
Greatcell Solar®, TiO2 paste
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$248.00
$359.00
$248.00
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About This Item
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SMILES string
[Ti](=O)=O
InChI
1S/2O.Ti
InChI key
GWEVSGVZZGPLCZ-UHFFFAOYSA-N
description
Crystal Structure: > 99% anatase (analysis carried out on starting material, prior to paste manufacture)
form
paste (yellow)
concentration
19.0 wt. %
avg. part. size
20 nm (active)
viscosity
40000-55000 mPa.s(20 °C) (Analysis carried out at 20°C with 20mm 4 degree cone/plate; 40 s-1))
Quality Level
1 of 4
This Item | 791555 | 791512 | 913952 |
|---|---|---|---|
| description Crystal Structure: > 99% anatase (analysis carried out on starting material, prior to paste manufacture) | description Crystal Structure: > 99% anatase (analysis carried out on starting material, prior to paste manufacture) | description - | description - |
| form paste (yellow) | form paste (cream) | form paste (Amber) | form dispersion, nanoparticles |
| concentration 19.0 wt. % | concentration 27.0 wt. % | concentration - | concentration 10 wt. % in ethanol |
| avg. part. size 20 nm (active) | avg. part. size 20 nm (active), ≤450 nm (scatter) | avg. part. size - | avg. part. size - |
| viscosity 40000-55000 mPa.s(20 °C) (Analysis carried out at 20°C with 20mm 4 degree cone/plate; 40 s-1)) | viscosity 40000-55000 mPa.s(20 °C) (Analysis carried out with 20mm 4 degree cone/plate; 40 s-1)) | viscosity 2500-4500 mPa.s (Analysis carried out at 20°C with 20mm 4 degree cone/plate; 40 s-1) | viscosity - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
Application
Transparent Titania Paste is formulated to yield sintered film thicknesses of 6-7μm when screen printed with a 43T mesh. Transparent Titania Paste has highly dispersed and stable anatase nanoparticles.
It is optimised for screen printing using a synthetic 43T mesh screen (or similar). After drying; this paste must be fired at or above 500°C. This results in a transparent sintered layer; with a film thickness of approximately 6-7μm for one printed layer and ~12μm for two printed layers; when using a 43T mesh screen.
The paste exhibits optimal rheological properties that provide good surface uniformity and contains organic binders specially formulated to provide versatile porosity suitable for a range of dye/electrolyte systems.
Storage: Store in the dark at 20°C
General description
Legal Information
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
Storage Class
10 - Combustible liquids
wgk
WGK 1
flash_point_f
195.8 °F - closed cup
flash_point_c
91 °C - closed cup
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Can this product be used directly at temperatures below 150°C without requiring an annealing process?
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This product is not evaluated for the application process. The specific requirements for annealing, such as temperature and duration, depend on the end-use application and desired performance characteristics. Conducting a trial is recommended to determine if direct use at temperatures below 150°C is feasible. Ultimately, it is the responsibility of the user to assess the best application and use of the product.
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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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