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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:
1314-61-0
Molecular Weight:
441.89
EC Number:
215-238-2
MDL number:
MFCD00011254
UNSPSC Code:
12352300
eCl@ss:
38180602
PubChem Substance ID:
24852274
NACRES:
NA.23

Quality Level

100

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

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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