Tungsten hexacarbonyl
Synonym: Tungsten carbonyl, Hexacarbonyl wolfram, W(CO)6
CAS Number 14040-11-0 | MDL Number MFCD00011462 | EC Number 237-880-2
Tungsten hexacarbonyl, also known as hexacarbonyltungsten, tungsten carbonyl, or hexakis(carbon monoxide) tungsten, is a white crystalline powder with the molecular formula W(CO)₆ and a molecular weight of 351.9 g/mol. This compound is highly pure, with a purity level of 99%+ verified by titration, and it plays a significant role in various chemical processes, particularly in organometallic chemistry and catalysis.
Hexacarbonyl wolfram is often used as a precursor for tungsten in the chemical vapor deposition (CVD) of thin films, which are crucial for semiconductor manufacturing and other high-tech applications. Tungsten films produced via CVD are valued for their conductivity, making them essential components in microelectronics and other advanced material technologies.
This compound appears as a white crystalline powder and is stable under normal conditions, though it should be stored in tightly sealed containers to maintain its reactivity and prevent contamination. Tungsten hexacarbonyl is typically solid at room temperature and exhibits low sensitivity to moisture, making it relatively easy to handle in dry environments.
Tungsten carbonyl is widely used in industrial applications as a catalyst or as a precursor for other tungsten-containing compounds. Its ability to decompose and release carbon monoxide in a controlled manner allows for its use in creating thin films or in catalyzing various organic reactions.
Though not highly reactive, tungsten hexacarbonyl should be handled with care due to the potential hazards associated with exposure to carbonyl compounds. Proper protective equipment, such as gloves and goggles, is recommended when working with this substance to prevent any direct contact or inhalation of its dust.
In summary, tungsten hexacarbonyl, also referred to as hexacarbonyltungsten or tungsten carbonyl, is a highly pure and reactive compound commonly used in thin-film deposition and catalysis. Its stability and versatility make it a valuable material in advanced industrial applications, though standard safety measures should be followed during handling and storage.
Tungsten hexacarbonyl is easily vaporized and decomposed by the electron beam — providing a convenient source of tungsten atoms. This product is widely used in electron beam-induced deposition processes, it is also used as a precursor to catalysts for alkene metathesis and to desulfurize organosulfur compounds. It is relatively air-stable, and it is sparingly soluble in non-polar organic solvents. W(CO)6 reactions begin with the displacement of some of its CO ligands. Similar to Mo(CO)6 in behavior, W(CO)6 typically forms compounds that are kinetically more robust. The synthesis of this product is reported (see the links below).
Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing Tungsten hexacarbonyl, contact us at sales@ereztech.com
Safety information
| UN | 3466 |
| Hazardous class | 6.1 |
| Packing group | III |
| Pictograms |  |
| Signal word | DANGER |
| Hazard statements | H30-H301-H311-H331 |
| Precautionary statements | P261-P262-P264-P270-P271-P280-P304 + P340 + P310-P403 + P233 |
| Transport description | |
| In TSCA registry | Yes |
First Aid Measures
| General advice | Consult a physician. Show this safety data sheet to the doctor in attendance. Move out of dangerous area. |
| Eye contact | Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. |
| Skin contact | Wash off with soap and plenty of water. Consult a physician. |
| Inhalation | If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. |
| If swallowed | Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. |
Certificates of analysis (CoA)
COA_W0110_LR20W4622 COA_W0110_LR20W3622 COA_W0110_LR20W1722
If you don’t see the needed lot of Tungsten hexacarbonyl CAS 140-40-11-0 below please contact customer support at sales@ereztech.com
External identifiers for Hexacarbonylwolfram
| Pubchem CID | 98884 |
| SMILES | O=C=[W](=C=O)(=C=O)(=C=O)(=C=O)=C=O |
| IUPAC Name | dimethylazanide;tantalum(5+) |
| InchI Identifier | InChI=1S/6CO.W/c6*1-2 |
| InchI Key | FQNHWXHRAUXLFU-UHFFFAOYSA |
Known applications and external links
- Manning, A. R.; Hacket, Paul; Birdwhistell, Ralph (1990). “Hexacarbonylbis(η5‐Cyclopentadienyl)Dichromium, Molybdenum, and Tungsten and their Analogs, M2(η5‐C5H4R)2(CO)6 (M = Cr, Mo, and W; R = H, Me or PhCH2)”. Inorganic Syntheses. 28: 148–149.
- Kubas, G. J.; van der Sluys, L. S. (1990). “TricarbonylTris(nitrile) Complexes of Cr, Mo, and W”. Inorganic Syntheses. 28: 29–33.
With Tungsten hexacarbonyl other customers often ask:
- Tris(acetonitrile)tricarbonyltungsten
- Tungsten(VI) ethoxide
- tris(3-hexyne)tungsten(0) carbonyl
- Bis(cyclopentadienyl)tungsten dichloride
Ereztech synthesizes and sells additional W-compounds.
To purchase Tungsten hexacarbonyl CAS 14040-11-0 contact us at sales@ereztech.com
