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
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339202
Niob(V)-ethoxid
99.95% trace metals basis
Nachhaltigkeitsmerkmale
Synonym(e):
NbOEt, Niob(V)-ethoxid, Niob-ethanolat, Niob-ethylat, Pentaethoxyniob
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Über diesen Artikel
Quality Segment
product line
Sol-Gel Precursors
assay
99.95% trace metals basis
form
liquid
reaction suitability
core: niobium
sustainability
Sustainability features
refractive index
n20/D 1.516 (lit.)
bp
142 °C/0.1 mmHg (lit.)
mp
5-6 °C (lit.)
density
1.268 g/mL at 25 °C (lit.)
SMILES string
CCO[Nb](OCC)(OCC)(OCC)OCC
InChI
1S/5C2H5O.Nb/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5
InChI key
ZTILUDNICMILKJ-UHFFFAOYSA-N
General description
Application
Aufgrund seines geringen Siedepunkts und seiner niedrigen Zersetzungstemperatur (~325–350 °C) wird Niob(V)-ethoxid auch als Vorläufer für die Atomlagenabscheidung, chemische Gasphasenabscheidung und metallorganische chemische Gasphasenabscheidung von Nioboxiden verwendet.
Es kann auch als Dotierstoff zum Herstellen einer Nb-dotierten TiO2-Photoanode für Grätzel-Zellen (DSSC) eingesetzt werden. Das Dotieren von Nb setzt das Leitungsband von TiO2 herab und verbessert dadurch die Elektroneninjektion und Transferfähigkeit von TiO2-Photoanoden. Dies führt zu einer signifikanten Leistungssteigerung von DSSC.
Features and Benefits
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description 99.95% trace metals basis | description - | description anhydrous, powder, 99.995% trace metals basis | description ≥99.9% trace metals basis |
| assay 99.95% trace metals basis | assay - | assay 99.995% trace metals basis | assay ≥99.9% trace metals basis |
| form liquid | form - | form powder | form crystals and lumps |
| density 1.268 g/mL at 25 °C (lit.) | density - | density 2.75 g/mL at 25 °C (lit.) | density 2.75 g/mL at 25 °C (lit.) |
| mp 5-6 °C (lit.) | mp - | mp 204.7 °C (lit.) | mp 204.7 °C (lit.) |
| refractive index n20/D 1.516 (lit.) | refractive index - | refractive index - | refractive index - |
| bp 142 °C/0.1 mmHg (lit.) | bp - | bp 254 °C (lit.) | bp 254 °C (lit.) |
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Signalwort
Warning
Gefahrencodes
Sicherheitshinweise
Hazard Classifications
Flam. Liq. 3
Lagerklasse
3 - Flammable liquids
WGK
WGK 3
Flammpunkt (°F)
96.8 °F - closed cup
Flammpunkt (°C)
36 °C - closed cup
PSA (Persönliche Schutzausrüstung)
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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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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