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208515

Sigma-Aldrich

Niobium(V) oxide

−325 mesh, 99.9% trace metals basis

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Synonym(s):
Niobium pentoxide
Empirical Formula (Hill Notation):
Nb2O5
CAS Number:
Molecular Weight:
265.81
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

assay

99.9% trace metals basis

form

powder

particle size

−325 mesh

density

4.47 g/mL at 25 °C (lit.)

SMILES string

O=[Nb](=O)O[Nb](=O)=O

InChI

1S/2Nb.5O

InChI key

ZKATWMILCYLAPD-UHFFFAOYSA-N

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1 of 4

This Item
203920383163339202
vibrant-m

208515

Niobium(V) oxide

vibrant-m

203920

Niobium(V) oxide

vibrant-m

383163

Niobium(IV) oxide

vibrant-m

339202

Niobium(V) ethoxide

particle size

−325 mesh

particle size

-

particle size

-

particle size

-

assay

99.9% trace metals basis

assay

99.99% trace metals basis

assay

99.9% trace metals basis

assay

99.95% trace metals basis

density

4.47 g/mL at 25 °C (lit.)

density

4.47 g/mL at 25 °C (lit.)

density

5.9 g/mL at 25 °C (lit.)

density

1.268 g/mL at 25 °C (lit.)

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

General description

Niobium(V) oxide, also known as niobium pentoxide, is a white crystalline powder. It is a refractory metal oxide with a high melting point of over 2500 °C and high chemical stability, including to oxygen and moisture. Niobium(V) oxide is mainly used as a raw material in the production of niobium and niobium alloys, as a catalyst in chemical reactions, and as a refractory material in high-temperature applications. It is also used as a dielectric material in capacitors and as a pigment in ceramics and glasses.

Application

Applied in the solid state formation of an unusual cation deficient perovskite, Ba7Nb4MoO20.
Promising results were obtained using niobium(V) oxide as an alternate electrode to lithium metal in advanced fuel cells.

Features and Benefits

Applied in the solid state formation of an unusual cation deficient perovskite, Ba7Nb4MoO20.

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Garcia-Gonzalez, E. et al.
Chemistry of Materials, 11, 433-433 (1999)
Akiko Obata et al.
ACS applied materials & interfaces, 4(10), 5684-5690 (2012-10-04)
The effects of niobium ions released from 60CaO-30P(2)O(5)-(10-x)Na(2)O-xNb(2)O(5) (mol %, x = 0-10) glasses on MC3T3-E1 cell functions were evaluated by culture tests with two systems; cell culture on glass plates, or in culture media containing glass extracts. Alkaline phosphatase
Matthew D Pickett et al.
Nanotechnology, 23(21), 215202-215202 (2012-05-04)
We built and measured the dynamical current versus time behavior of nanoscale niobium oxide crosspoint devices which exhibited threshold switching (current-controlled negative differential resistance). The switching speeds of 110 × 110 nm(2) devices were found to be Δt(ON) = 700
Robert L Karlinsey et al.
Biomedical materials (Bristol, England), 1(1), 16-23 (2008-05-07)
Crystalline, self-assembled niobium oxide microstructures formed in situ via potentiostatic anodization of niobium foil in an HF(aq) electrolyte solution are proposed as exceptional nucleators of Ca-P minerals, including hydroxyapatite. This material was tested for bioactivity through immersion in simulated and
Fabrication and characterization of MIM diodes based on Nb/Nb2O5 via a rapid screening technique.
Prakash Periasamy et al.
Advanced materials (Deerfield Beach, Fla.), 23(27), 3080-3085 (2011-05-25)

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