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Key Documents

204536

Sigma-Aldrich

Tantalum(V) oxide

<20 μm, 99.99% trace metals basis

Synonym(s):

Tantalum pentoxide

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About This Item

Linear Formula:
Ta2O5
CAS Number:
Molecular Weight:
441.89
EC Number:
MDL number:
UNSPSC Code:
12352303
eCl@ss:
38180602
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99.99% trace metals basis

form

powder

reaction suitability

reagent type: catalyst
core: tantalum

particle size

<20 μm

density

8.2 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[Ta](=O)O[Ta](=O)=O

InChI

1S/5O.2Ta

InChI key

PBCFLUZVCVVTBY-UHFFFAOYSA-N

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General description

Ta2O5 (tantalum pentoxide) is a transition-metal oxide with a high refractive index (n=2.02–2.16), high dielectric constant, wide bandgap (4.0–4.5 eV), and wide transmission spectrum. It is a non-silicon dielectric material used in microelectronic devices and the ideal capacitive material for next-generation multi-chip modules. Due to its high acidity, it can serve as a catalyst for the oxidation of alkanes and pollution reduction. In addition, it is successfully used for the anode oxidization of electrodes in lithium batteries.

Application


  • Double-layered nanoparticle stacks for spectro-electrochemical applications.: This study discusses the development of double-layered nanoparticle stacks incorporating Tantalum(V) oxide, which have significant potential in spectro-electrochemical applications due to their high refractive index and dielectric properties (Frank et al., 2012).

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Articles

As the electronic industry continues to move towards smaller and smaller devices, researchers must continually strive for technologies to deposit electronic materials with precision at ever-smaller scales. This trend has lead to a variety of techniques used in the microelectronics industry to layer materials with precision thicknesses, sometimes down to even the atomic level.

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