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TUNGSTEN SILICIDE

TUNGSTEN SILICIDE Structure
TUNGSTEN SILICIDE structure
CAS No.
12039-88-2
Chemical Name:
TUNGSTEN SILICIDE
Synonyms
TUNGSTEN SILICIDE;TUNGSTEN DISILICIDE;tungsten(IV) silicide;TUNGSTEN SILICIDE (99.7%-W);TUNGSTEN SILICIDE, -325 MESH;TUNGSTEN SILICIDE ISO 9001：2015 REACH;Tungsten silicide, 99.5% (metals basis);TUNGSTEN SILICIDE, 99.995% (METALS BASIS EXCLUDING MO), MO <;Tungsten silicide, 99.995% (metals basis excluding Mo), Mo <20ppm;TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%
CBNumber:
CB0307758
Molecular Formula:
Si2W
Molecular Weight:
240.01
MDL Number:
MFCD00049704
MOL File:
12039-88-2.mol
Last updated:2026-05-27 22:33:10
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TUNGSTEN SILICIDE Properties

Melting point 2165°C
Density 9,88 g/cm3
solubility insoluble in H2O
form Powder
Specific Gravity 9.88
color blue-gray tetragonal crystals, crystalline
Resistivity 33.4 (ρ/μΩ.cm)
Water Solubility Insoluble in water.
Thermal Conductivity 40.585 W/(m·K)
Hydrolytic Sensitivity 2: reacts with aqueous acid
Crystal Structure Tetragonal
Exposure limits ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
CAS DataBase Reference 12039-88-2
EPA Substance Registry System Tungsten silicide (WSi2) (12039-88-2)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P301+P312-P302+P352-P304+P340-P305+P351+P338
Safety Statements  22
WGK Germany  3
TSCA  TSCA listed
REACH Registrations Active
NFPA 704
0
0 0

TUNGSTEN SILICIDE Chemical Properties,Uses,Production

Description

Tungsten silicide (WSi2) is an inorganic compound, a silicide of tungsten. It is an electrically conductive ceramic material. Tungsten silicide can react violently with substances such as strong acids, fluorine, oxidizers, and interhalogens. It is employed in microelectronics as a contact material, with a resistivity of 60-80 μΩ cm; it forms at 1000℃. It is frequently used as a shunt over polysilicon lines to increase their conductivity and increase signal speed. 

Chemical Properties

Blue-gray, very hard solid. Insoluble in water; attacked by fused alkalies and mixture of nitric and hydrofluoric acids.

Uses

Oxidation-resistant coatings, electrical resistance and refractory applications.

Uses

Tungsten silicide is used in microelectronics as a contact material. It is also used as a shunt over polysilicon lines to increase their conductivity and increase signal speed. Further, it acts as a barrier layer between silicon and other metals. In addition to this, it is used in microelectro mechanical systems and for oxidation-resistant coatings. It is also employed as a replacement for earlier tungsten films.

Hazard

Dust flammable.

TUNGSTEN SILICIDE Preparation Products And Raw materials

Raw materials

Preparation Products

TUNGSTEN SILICIDE Suppliers

Global( 120)Suppliers
Supplier Tel Email Country ProdList Advantage
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29812 58
BOC Sciences 		+1-631-485-4226 inquiry@bocsci.com United States 19936 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Dayang Chem (Hangzhou) Co.,Ltd. 		+86-0571-88938639 +8617705817739 info@dycnchem.com China 52704 58
Henan Alfa Chemical Co., Ltd 		+8615838112936 sale03@alfachem.cn China 9796 58
Alfa Chemistry 		+1-5166625404; Info@alfa-chemistry.com United States 20405 58
PT CHEM GROUP LIMITED 		+86-85511178; peter68@ptchemgroup.com China 35425 58
GIHI CHEMICALS CO.,LIMITED 		+86-571-86217390; +8618058761490 info@gihichemicals.com China 49954 58
HANGZHOU LEAP CHEM CO., LTD. 		+86-571-87711850 market18@leapchem.com China 43333 58
Aladdin Scientific 		tp@aladdinsci.com United States 57505 58
Supplier Advantage
career henan chemical co 		58
BOC Sciences 		58
Hefei TNJ Chemical Industry Co.,Ltd. 		58
Dayang Chem (Hangzhou) Co.,Ltd. 		58
Henan Alfa Chemical Co., Ltd 		58
Alfa Chemistry 		58
PT CHEM GROUP LIMITED 		58
GIHI CHEMICALS CO.,LIMITED 		58
HANGZHOU LEAP CHEM CO., LTD. 		58
Aladdin Scientific 		58

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View Lastest Price from TUNGSTEN SILICIDE manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
TUNGSTEN SILICIDE pictures 2019-07-10 TUNGSTEN SILICIDE
12039-88-2
 $1.00 1KG 99% 100kg Career Henan Chemical Co

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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 <20ppm Tungsten silicide, 99.5% (metals basis) TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99% TUNGSTEN SILICIDE ISO 9001：2015 REACH tungsten(IV) silicide 12039-88-2 WSi2 Ceramics Metal and Ceramic Science Silicides