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Tungsten hexacarbonyl

Product Name:
Tungsten hexacarbonyl
CAS No.
14040-11-0
Chemical Name:
Tungsten hexacarbonyl
CBNumber:
CB6684220
Molecular Formula:
6CO.W
Formula Weight:
351.9
MOL File:
14040-11-0.mol
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Tungsten hexacarbonyl Property

Melting point:
150 °C(lit.)
Boiling point:
175 °C
Density 
2.65 g/mL at 25 °C(lit.)
vapor density 
12.1 (vs air)
vapor pressure 
1.2 mm Hg ( 67 °C)
RTECS 
YO7705000
Flash point:
200°C
storage temp. 
Store below +30°C.
form 
Fine Crystalline Powder
color 
Light yellow to beige
Specific Gravity
2.671
Water Solubility 
insoluble
Hydrolytic Sensitivity
4: no reaction with water under neutral conditions
Stability:
Stable. Incompatible with oxidizing agents.
CAS DataBase Reference
14040-11-0(CAS DataBase Reference)
NIST Chemistry Reference
Tungsten hexacarbonyl(14040-11-0)
EPA Substance Registry System
Tungsten carbonyl (W(CO)6), (OC-6-11)- (14040-11-0)
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Safety

Hazard Codes 
T
Risk Statements 
23/24/25
Safety Statements 
22-24/25-45-38-36/37/39-28A-36/37
RIDADR 
UN 3466 6.1/PG 3
WGK Germany 
3
Hazard Note 
Toxic
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
HS Code 
29310095
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N-Bromosuccinimide Price More Price(16)

Sigma-Aldrich Gold
Product number:
241431
Product name :
Tungsten hexacarbonyl
Purity:
97%
Packaging:
10g
Price:
$81.2
Updated:
2019/12/02
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Buy
Sigma-Aldrich Gold
Product number:
241431
Product name :
Tungsten hexacarbonyl
Purity:
97%
Packaging:
50g
Price:
$281
Updated:
2019/12/02
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Buy
Alfa Aesar Gold
Product number:
043205
Product name :
Hexacarbonyltungsten, 97%
Packaging:
10g
Price:
$75.4
Updated:
2020/06/24
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Alfa Aesar Gold
Product number:
043205
Product name :
Hexacarbonyltungsten, 97%
Packaging:
50g
Price:
$270
Updated:
2020/06/24
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Strem Chemicals Gold
Product number:
74-2200
Product name :
Tungsten carbonyl, 99% (<0.3%-Mo)
Packaging:
5g
Price:
$102
Updated:
2020/06/24
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Buy
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Tungsten hexacarbonyl Chemical Properties,Usage,Production

Reaction

Volatile starting material used for the atomic layer deposition of tungsten oxide, tungsten nitride.
Tungsten hexacarbonyl is used to produce tungsten coatings on base metals. This is done by deposition of the carbonyl on the metal surface, which decomposes to leave a tungsten coating.

Preparation

Tungsten hexacarbonyl is produced by heating tungsten metal with carbon monoxide at high pressure. Also, carbonyl can be prepared by reducing the tungsten hexachloride by heating with iron powder under carbon monoxide pressure.

Chemical Properties

White, volatile, highly refractive, crystalline solid. Decomposes without melting at 150C. One of the more stable carbonyls. Insoluble in water; soluble in organic solvents.

Physical properties

White crystalline solid; density 2.65 g/cm3; decomposes at 170°C without melting; sublimes; vapor pressure 0.1 torr at 20°C; insoluble in water; soluble in most organic solvents.

Uses

Tungsten coatings on base metals by deposition and decomposition of the carbonyl.

Uses

It is used as a catalyst in many organicsynthetic reactions.

Health Hazard

Toxicity of this compound is not reported.Although air stable at ambient temperature,upon heating it emits toxic carbonmonoxide. Chronic exposure to its vaporsor dusts can cause bronchitis. Ingestion islikely to produce the toxic effect of tungstenoxides.

Fire Hazard

It explodes when heated to high temperature. Solution in ether can explode if stored for a long time.

Purification Methods

Sublime it in vacuo before use [Connoe et al. J Chem Soc, Dalton Trans 511 1986]. TOXIC.

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14040-11-0, Tungsten hexacarbonylRelated Search:

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Reaction Preparation