Triamminetungsten(IV) tricarbonyl
Triamminetungsten(IV) tricarbonyl (CAS: 58204-42-5) is an organometallic compound with the linear formula (NH 3)<sub>3</sub>W(CO)<sub>3</sub> and a molecular weight of 318.96 g/mol. This tungsten complex is primarily utilised as a precursor in chemical synthesis and materials science. Its properties make it suitable for applications in chemical vapour deposition (CVD) and atomic layer deposition (ALD), contributing to the development of advanced microelectronic components and specialized coatings.

CVD and ALD Precursor
Utilised as a precursor for Chemical Vapour Deposition (CVD) and Atomic Layer Deposition (ALD) processes. It facilitates the deposition of tungsten-containing thin films for microelectronic and materials science applications.
Catalysis
Serves as a potential catalyst or catalyst precursor in various inorganic and organometallic reactions. Its unique coordination sphere can influence catalytic activity and selectivity.
Materials Science
Employed in materials science research for the synthesis of novel tungsten-based materials. It can be used to create specialised coatings or functionalised surfaces.
Chemical Synthesis
Acts as a reagent or building block in complex chemical syntheses. It enables the introduction of tungsten carbonyl fragments into organic or inorganic frameworks.
| Molecular weight | 318.96 |
|---|---|
| Linear formula | (NH3)3W(CO)3 |
| Melting point | 227-231 °C(lit.) |

Hazard statements
- H261In contact with water releases flammable gas
Precautionary statements
- P231Handle under inert gas
- P422
| 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 3395 4.3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 14 |
| Safety statements (S) | 7 |
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 Triamminetungsten(IV) tricarbonyl used for?
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Triamminetungsten(IV) tricarbonyl is primarily used as a precursor in Chemical Vapour Deposition (CVD) and Atomic Layer Deposition (ALD) for creating tungsten-containing thin films, and also finds applications in catalysis and materials science.
What is the CAS number and formula for Triamminetungsten(IV) tricarbonyl?
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The CAS number is 58204-42-5 and the linear formula is (NH 3)<sub>3</sub>W(CO)<sub>3</sub>.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound typically as a research or technical grade material. We do not represent it as USP, BP, or EP grade. Please refer to the product specifications for available purity details.
How should Triamminetungsten(IV) tricarbonyl be handled safely?
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Triamminetungsten(IV) tricarbonyl is classified under UN 3395, Hazard Class 4.3, Packing Group II, indicating it is a substance that in contact with water emits flammable gases. It requires careful handling in a dry environment, with appropriate personal protective equipment including eyeshields, gloves, and respiratory protection (type N100 or P3 recommended). Avoid contact with water and store under inert gas. Follow all safety statements, including P231 + P232 and P422.
How is Triamminetungsten(IV) tricarbonyl packed, shipped, and exported?
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This compound is packed and shipped in accordance with UN 3395 regulations for dangerous goods. Tech Serve Solutions, as an experienced global supplier, handles all necessary export documentation and logistics to ensure safe and compliant international delivery.
How can I request a sample or quote for Triamminetungsten(IV) tricarbonyl?
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To request a sample or a detailed quote, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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