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203815

Sigma-Aldrich

Molybdenum(VI) oxide

99.97% trace metals basis

Synonym(s):
Molybdenum trioxide
Linear Formula:
MoO3
CAS Number:
Molecular Weight:
143.94
EC Number:
MDL number:
eCl@ss:
38180807
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99.97% trace metals basis

form

powder

mp

795 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[Mo](=O)=O

InChI

1S/Mo.3O

InChI key

JKQOBWVOAYFWKG-UHFFFAOYSA-N

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This Item
267856775703M0753
Molybdenum(VI) oxide 99.97% trace metals basis

Sigma-Aldrich

203815

Molybdenum(VI) oxide

Molybdenum(VI) oxide ACS reagent, ≥99.5%

Sigma-Aldrich

267856

Molybdenum(VI) oxide

Molybdenum(VI) oxide nanopowder, 100 nm (TEM), 99.5% trace metals basis

Sigma-Aldrich

775703

Molybdenum(VI) oxide

Molybdenum(VI) oxide ReagentPlus®, ≥99.5%

Sigma-Aldrich

M0753

Molybdenum(VI) oxide

form

powder

form

powder

form

nanopowder

form

crystals

mp

795 °C (lit.)

mp

795 °C (lit.)

mp

795 °C (lit.)

mp

795 °C (lit.)

application(s)

battery manufacturing

application(s)

-

application(s)

-

application(s)

-

General description

Molybdenum(VI) oxide, also known as molybdenum trioxide, is a compound of molybdenum and oxygen with the approximate chemical formula of MoO3. Typically, it a white or light yellow powder, although molybdenum(VI) oxide can adopt a high concentration of defects including oxygen vacancies that impart a bluish or greenish color. Molybdenum(VI) oxide has a high melting point of 2,620 °C. Chemically, molybdenum(VI) oxide is a strong oxidizing agent and has a high work function. Consequently, it is used as a catalyst in chemical reactions and as a starting material to produce other molybdenum compounds. In addition, it is added to pigments, glasses, lubricants, and plastics.

Application

Used in the solid state synthesis of a remarkable ternary, reduced molybdenum oxide, Pr4Mo9O18, whose structure contains previously unknown Mo7, Mo13and Mo19 clusters. The new cluster product is a small band gap semiconductor.
Precursor to LAMOX fast ion conductors and superconductors.
Used in the solid state synthesis of a remarkable ternary, reduced molybdenum oxide, Pr4Mo9O18, whose structure contains previously unknown Mo7, Mo13 and Mo19 clusters. The new cluster product is a small band gap semiconductor.

Pictograms

Exclamation markHealth hazard

Signal Word

Warning

Hazard Statements

Hazard Classifications

Carc. 2 - Eye Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Molybdenum

MoO3 films spin-coated from a nanoparticle suspension for efficient hole-injection in organic electronics.
Jens Meyer et al.
Advanced materials (Deerfield Beach, Fla.), 23(1), 70-73 (2010-10-27)
Lili Cai et al.
Nano letters, 11(2), 872-877 (2011-01-26)
We report an atmospheric, catalyst-free, rapid flame synthesis technique for growing single, branched, and flower-like α-MoO(3) nanobelt arrays on diverse substrates. The growth rate, morphology, and surface coverage density of the α-MoO(3) nanobelts were controlled by varying the flame equivalence
Efficient, large area ITO-and-PEDOT-free organic solar cell sub-modules.
Hui Jin et al.
Advanced materials (Deerfield Beach, Fla.), 24(19), 2572-2577 (2012-04-11)
Kourosh Kalantar-zadeh et al.
Nanoscale, 2(3), 429-433 (2010-07-21)
The formation of MoO(3) sheets of nanoscale thickness is described. They are made from several fundamental sheets of orthorhombic alpha-MoO(3), which can be processed in large quantities via a low cost synthesis route that combines thermal evaporation and mechanical exfoliation.
Efficient single-layer polymer light-emitting diodes.
Dinesh Kabra et al.
Advanced materials (Deerfield Beach, Fla.), 22(29), 3194-3198 (2010-06-22)

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