CAS 12039-88-2 Tungsten Silicide - Materials / Alfa Chemistry

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Tungsten Silicide

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Catalog Number

ACM12039882

CAS Number

12039-88-2

Product Name

Tungsten Silicide

Structure

Category

Ceramic Materials

Synonyms

TUNGSTEN SILICIDE;TUNGSTEN DISILICIDE;TUNGSTEN SILICIDE, -325 MESH;TUNGSTEN SILICIDE (99.7%-W);TUNGSTEN SILICIDE, 99.995% (METALS BASIS EXCLUDING MO), MO ;Tungsten silicide, 99.995% (metals basis excluding Mo), Mo ;Tungsten silicide, 99.5% (metals basis)

IUPAC Name

bis($l^{3}-silanylidyne)tungsten

Molecular Weight

240.02 g/mol

Molecular Formula

Si2W

Canonical SMILES

[Si]#[W]#[Si]

InChI Key

WQJQOUPTWCFRMM-UHFFFAOYSA-N

Melting Point

900ºC

Flash Point

N/A

Purity

96%

Density

9.88 g/cm³

Appearance

Blue-gray powder or pieces, no odor.

Application

Tungsten silicide serves a crucial role in microelectronics and microelectromechanical systems due to its properties as a blue-gray, very hard, electrically conductive ceramic material. It is commonly utilized as a contact material to enhance conductivity and accelerate signal transmission, often being applied as a shunt over polysilicon lines. Additionally, tungsten silicide functions as a barrier layer between silicon and other metals and is used for oxidation-resistant coatings. While insoluble in water, it is reactive with substances like strong acids and fluorine. Its versatility extends to replacing earlier tungsten films, leveraging its formation at high temperatures and its significant use in various technological applications.

EC Number

234-909-0

Exact Mass

239.90500

Packaging

10 g; 100 g;

Safety Description

S22

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