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Molybdenum trioxide

Molybdenum trioxide

CAS Number: 1313-27-5

Molecular Formula: MoO3

Main Element: MolybdenumAtomic No. 42MoO3 Catalyst & Steel AdditiveMolybdenum Alloy PrecursorExtractive & Physical Metallurgy

About Molybdenum trioxide

Molybdenum trioxide manufacturers and suppliers in the United States produce MoO3 (CAS 1313-27-5, molecular weight 143.96 g/mol) as a white to pale yellow crystalline powder with a melting point of 795°C and a density of 4.69 g/cm³. It is the primary commercial form of molybdenum oxide and the starting point for the mo...

Synonyms

  • dioxomolybdenum
  • Molybdenumtrioxide
  • n atural molybdite
  • Anhydride molybdique
  • MOLYBDENUM OXIDE
View all

Molybdenum trioxide Specifications

CAS Number
1313-27-5
Molecular Formula
MoO3
Molecular Weight
143.958
IUPAC Name
trioxomolybdenum
Canonical SMILES
O=[Mo](=O)=O
InChI Key
JKQOBWVOAYFWKG-UHFFFAOYSA-N
InChI
1S/Mo.3O
EINECS Number
215-204-7
MDL Number
MFCD00003469
HSN No
284690
Molecular Weight
143.958
PSA
51.210
LogP
-0.35640
Physical State
Pale yellowish-green powder
MoO3-HP Sublimed
≥ 99.95% (MoO3 Assay (% Min)
MoO3-Cat Grade
≥ 99.5% (MoO3 Assay (% Min)
MoO3-Tech Grade
≥ 98.0% (MoO3 Assay (% Min)
Boiling point
2111°F at 760 mmHg
Flash Point
1155ºC
Physical appearance
White or light yellow powder, or white to gray powder to crystal, or fine yellow crystalline powder
Melting Point
795 °C (lit.)
GHS Hazard Statements Code
H319, H335, H351
Symbol
GHS07, GHS08
Hazard Codes
Xn
Precaution Statements Code
P261; P281; P305 + P351 + P338
Precautionary Statement Codes
P201, P202, P261, P264, P271, P280, P304+P340, P305+P351+P338, P308+P313, P312, and P337+P313
Hazard Classes and Categories
Eye Irrit. 2A (100%) STOT SE 3 (100%)

Heterogeneous Industrial Catalysts

Highly utilised as a primary catalyst or co-catalyst precursor in hydrodesulfurisation (HDS), hydrodenitrogenation (HDN), and the selective oxidation of methanol to formaldehyde

Electrochromic & Smart Window Coatings

Functions as a vital thin-film intercalation layer due to its reversible optical properties during ion insertion/extraction cycles

Energy Storage & Lithium-Ion Batteries

Explored as an advanced high-capacity anode material owing to its distinct layered orthorhombic (α-MoO₃) crystal structure, which accommodates high-density lithium intercalation.

Extractive Metallurgy

Primary intermediate produced when molybdenum ores (mainly molybdenite, MoS₂) are purified Precursor: Chemical precursor required to manufacture pure molybdenum metal through hydrogen reduction

Physical Metallurgy

Microstructure: Studied for addition of molybdenum (derived from MoO3) affects the phase diagrams, grain growth, and crystal structure (typically BCC) of the resulting alloys Property Enhancement: Studied for its role in enhancing "red hardness" in high-speed tools and preventing stress corrosion cracking in high-strength environments

Steel Production

Direct Addition: "Technical-grade" or roasted molybdenum trioxide is primarily used directly in steel production Function: Essential alloying agent that increases steel's strength, hardenability, and corrosion resistance, particularly in stainless and tool steels

Specialty Lubricants & Friction Modifiers

Crucial solid lubricant additive and anti-wear agent in heavy-duty extreme pressure (EP) oils and high-temperature greases

Aviation & Military-Grade Alloys

Raw material for the production of pure molybdenum metal powder, target materials, and high-performance superalloys required in gas turbine components and rocket nozzles

Smoke Suppressants & Flame Retardants

Incorporated into engineering plastics, polyurethanes, and PVC formulations to promote solid-phase charring and dramatically reduce toxic smoke density.

Alloying Agent

An alloying agent in the production of steel and other metals to enhance strength and corrosion resistance

Chemical Catalyst

A catalyst in chemical processes including petroleum refining, coal conversion, polymer production, and the oxidation of propene and ammonia

Electronic Material

A hole transport or injection layer in organic photovoltaics, organic light-emitting diodes, and perovskite solar cells

Solid Lubricant

A solid lubricant additive in greases for high-temperature and high-pressure bearings, gears, and joints

Precursor

A raw material for the production of molybdenum metal, molybdenum dioxide, and various molybdate salts

Battery Material

An anode material for lithium-ion batteries due to high specific capacity and stability

Analytical Reagent

A reagent for chemical analysis and the determination of trace elements

Industrial Additive

An additive in the manufacturing of enamels, ceramics, and glass to improve adhesion and properties

Detail 1

Avoid dust generation. Use a P2 or P3 respirator as inhalation of molybdenum dust can cause respiratory irritation or moly-bosh

  1. dioxomolybdenum
  2. Molybdenumtrioxide
  3. n atural molybdite
  4. Anhydride molybdique
  5. MOLYBDENUM OXIDE

Molybdenum trioxide FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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