Tungsten(IV) sulfide
Tungsten(IV) sulfide (WS2), CAS 12138-09-9, is a grey-black powder with a molecular weight of 247.97 g/mol. This inorganic compound is recognised for its semiconducting properties and layered structure, making it valuable in catalysis and materials science. TSS supplies Tungsten(IV) sulfide with an assay of 99%, suitable for demanding chemical synthesis and research applications.
Catalyst Development
Tungsten(IV) sulfide serves as a catalyst or catalyst precursor in various chemical reactions, particularly in hydrodesulfurization (HDS) and hydrogenation processes. Its layered structure allows for accessible active sites for catalytic conversion.
Lubricant Additive
Due to its layered structure and low inter-layer friction, WS2 is employed as a solid lubricant additive. It can reduce friction and wear in extreme pressure and high-temperature environments, enhancing the performance of greases and oils.
Semiconductor Materials
The semiconducting nature of WS2 makes it a candidate for electronic and optoelectronic applications. Its 2D layered structure is being explored for next-generation transistors and photodetectors.
Chemical Synthesis
As a source of tungsten and sulfur, WS2 can be utilised in the synthesis of other tungsten-containing compounds and materials. Its defined stoichiometry is advantageous in precise chemical preparations.
| Molecular weight | 247.97 |
|---|---|
| Linear formula | WS2 |
| Assay | 99% |
| Form | powder |
| Density | 7.5 g/mL at 25 °C(lit.) |
| Particle size | 2 μm |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | nwg |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 Tungsten(IV) sulfide used for?
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Tungsten(IV) sulfide (WS2) is primarily used in catalysis, as a solid lubricant additive, and in the development of semiconductor materials due to its unique layered structure and semiconducting properties.
What is the CAS number and formula for Tungsten(IV) sulfide?
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The CAS number for Tungsten(IV) sulfide is 12138-09-9, and its chemical formula is WS2.
What grade and purity does Tech Serve Solutions supply for Tungsten(IV) sulfide?
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Tech Serve Solutions supplies Tungsten(IV) sulfide with a minimum assay of 99%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated in the product documentation.
How should Tungsten(IV) sulfide be handled safely?
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Tungsten(IV) sulfide is classified as an irritant to the skin, eyes, and respiratory tract (H315, H319, H335). When handling, use a dust mask (type N95 US), safety eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust.
How is Tungsten(IV) sulfide packed and shipped?
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Tungsten(IV) sulfide is typically supplied as a powder. TSS exports this chemical globally, adhering to all necessary transport and safety regulations.
How can I request a quote or sample of Tungsten(IV) sulfide?
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To request a quote or a sample of Tungsten(IV) sulfide, please contact the TSS sales team through our website or by phone, providing your specific requirements and shipping details.
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