TUNGSTEN SILICIDE
- Product Name
- TUNGSTEN SILICIDE
- 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
- Formula Weight
- 240.01
- MOL File
- 12039-88-2.mol
TUNGSTEN SILICIDE Property
- 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.
- 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
- Safety Statements
- 22
- WGK Germany
- 3
- TSCA
- Yes
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
TUNGSTEN SILICIDE Chemical Properties,Usage,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
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View Lastest Price from TUNGSTEN SILICIDE manufacturers
- Product
- TUNGSTEN SILICIDE 12039-88-2
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 100kg
- Release date
- 2019-07-09