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339113

Tantalum(V) ethoxide

99.98% trace metals basis

Tantalum(V) ethoxide

Synonym(s):

Pentaethoxytantalum, Pentaethyl tantalate, Tantalum ethylate, Tantalum pentaethoxide, Tantalum(V) ethoxide

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$187.00

100 G

$1,300.00

$187.00


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About This Item

Linear Formula:
Ta(OC2H5)5
CAS Number:
Molecular Weight:
406.25
Beilstein/REAXYS Number:
3678999
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

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assay

99.98% trace metals basis

form

liquid

reaction suitability

core: tantalum
reagent type: catalyst

impurities

<2 wt. % toluene

refractive index

n20/D 1.487 (lit.)

bp

155 °C/0.01 mmHg (lit.)

mp

21 °C (lit.)

density

1.566 g/mL at 25 °C (lit.)

SMILES string

CCO[Ta](OCC)(OCC)(OCC)OCC

InChI

1S/5C2H5O.Ta/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5

InChI key

HSXKFDGTKKAEHL-UHFFFAOYSA-N

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This Item
383244760404383333
assay

99.98% trace metals basis

assay

-

assay

-

assay

99.99% trace metals basis

form

liquid

form

solid

form

liquid

form

liquid

mp

21 °C (lit.)

mp

-

mp

21 °C (lit.)

mp

-

density

1.566 g/mL at 25 °C (lit.)

density

-

density

1.566 g/mL at 25 °C (lit.)

density

1.31 g/mL at 25 °C (lit.)

bp

155 °C/0.01 mmHg (lit.)

bp

-

bp

155 °C/0.01 mmHg (lit.)

bp

-

refractive index

n20/D 1.487 (lit.)

refractive index

-

refractive index

n20/D 1.487 (lit.)

refractive index

n20/D 1.483 (lit.)

General description

Tantalum(V) ethoxide is primarily used to produce tantalum oxide thin films for applications in optics, semiconductors, and electrochromic devices. These films possess high refractive index and excellent electrical insulation properties. Additionally, when tantalum is alloyed with other metals, it gains enhanced strength, ductility, and corrosion resistance, making it highly suitable for applications in electronics and advanced materials. Our 99.98% trace metals basis of Tantalum(V) ethoxide is suitable for the synthesis of  tantalum oxide by chemical vapor deposition (CVD).

Application

Tantalum ethoxide is used as a precursor
  • To synthesize modified tantalum-alkoxo complexes, enabling the fabrication of TaO thin films with tunable optical properties.
  • In the sol–gel synthesis of tantalum oxide nanoparticles, which, when doped with rare earth elements, form wide band gap semiconductors showing both stokes and anti-stokes visible luminescence.
  • To synthesize hollow TaOx nanoshells in the formation of BiS@TaOx-HA core–shell nanoparticles, which serve as multifunctional theranostic agents for CT/photoacoustic imaging and enhanced photothermal cancer therapy.

Features and Benefits

  • 99.98% purity on a trace metals basis ensures minimal contamination for critical applications, resulting in superior quality materials.
  • Low metal impurities (< 250.0 ppm) enhance sol-gel formation for the synthesis of nanoparticles.

pictograms

Flame

signalword

Warning

hcodes

Hazard Classifications

Flam. Liq. 3

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

84.2 °F - closed cup

flash_point_c

29 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Leakage currents in amorphous Ta 2 O 5 thin films
Chiu F, et al.
Journal of Applied Physics, 81(10), 6911-6915 (1997)
The Electrosynthesis of Tantalum Ethoxide
Yang H, et al.
Electrochemistry, 82(9), 743-748 (2014)
Controlling the synthesis of TaC nanopowders by injecting liquid precursor into RF induction plasma
Ishigaki T, et al.
Science and Technology of Advanced Materials, 6(2), 111-111 (2005)
Ultrathin tantalum oxide capacitor dielectric layers fabricated using rapid thermal nitridation prior to low pressure chemical vapor deposition
Kamiyama S, et al.
Journal of the Electrochemical Society, 140(6), 1617-1625 (1993)
Jeffrey D Steinberg et al.
EJNMMI research, 4(1), 15-15 (2014-03-13)
Cerenkov luminescence imaging (CLI) is an emerging imaging technique where visible light emitted from injected beta-emitting radionuclides is detected with an optical imaging device. CLI research has mostly been focused on positive contrast imaging for ascertaining the distribution of the

Articles

The properties of many devices are limited by the intrinsic properties of the materials that compose them.

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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  1. Spain
    • Reviews 2
    • Votes 0
    5 out of 5 stars.

    Reliable and working

    Working as sol-gel precursor for the deposition of thin films

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