Molybdenum
Molybdenum (CAS: 7439-98-7, Formula: Mo, MW: 95.94 g/mol) is a lustrous, silvery-white, hard metal. It is valued for its high melting point, excellent electrical conductivity, and resistance to corrosion. Molybdenum finds critical applications in high-temperature alloys, catalysts, lubricants, and as a precursor in advanced materials science, including thermoelectric applications.

Catalysis
Molybdenum compounds are widely used as catalysts in petrochemical processes, such as hydrodesulfurization. Its ability to facilitate specific chemical reactions makes it indispensable in refining and chemical synthesis.
Alloys and Superalloys
Added to steel, molybdenum significantly increases hardness, toughness, and resistance to corrosion and wear. This makes it vital for high-strength alloys used in aerospace, automotive, and industrial machinery.
Thermoelectric Materials
Molybdenum and its compounds are investigated and utilized as precursors for thermoelectric materials, which convert heat energy into electrical energy and vice versa, finding use in waste heat recovery and solid-state cooling.
Lubricants
Molybdenum disulfide (MoS2) is an excellent solid lubricant, especially under extreme pressure and high temperatures where traditional liquid lubricants fail. It is used in greases and dry-film coatings.
| Molecular weight | 95.94 |
|---|---|
| Empirical formula | Mo |
| Assay | 99.9% trace metals basis |
| Form | powder |
| Boiling point | 4612 °C(lit.) |
| Density | 10.3 g/mL at 25 °C(lit.) |
| Particle size | <150 μm |
| Melting point | 2617 °C(lit.) |
| Impurities tested | 5% Tungsten |
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3089 4.1/PG 2 |
| Water hazard class (WGK, DE) | nwg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Resistivity | 5.0 μΩ-cm, 20°C |
|---|---|
| Thickness | 0.1 mm |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Molybdenum used for?
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Molybdenum is used in high-temperature alloys, as a catalyst in petrochemical processing, as a solid lubricant (molybdenum disulfide), and as a precursor for thermoelectric materials.
What is the CAS number and formula for Molybdenum?
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The CAS number for Molybdenum is 7439-98-7, and its chemical formula is Mo.
What grade and purity does Tech Serve Solutions supply for Molybdenum?
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Tech Serve Solutions supplies Molybdenum with an assay of 99.9% (trace metals basis), with 5% Tungsten as an impurity. We do not represent this product as USP, BP, or EP grade.
How should Molybdenum be handled safely?
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Handle Molybdenum with appropriate personal protective equipment, including eyeshields, gloves, and a full-face particle respirator (N100 US / P3 EN143). Refer to the safety data sheet for comprehensive handling instructions.
Is Molybdenum shipped internationally by TSS?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Molybdenum.
How can I request a quote or sample of Molybdenum?
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Please contact our sales team directly via our website or phone to request a quote or sample of Molybdenum.
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