TUNGSTEN SILICIDE
$38 - $101.65
- Product nameTUNGSTEN SILICIDE
- Cas No12039-88-2
- MFSi2W
- MW240.01
- EINECS234-909-0
- MDL NumberMFCD00049704
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 <20ppm;Tungsten silicide, 99.5% (metals basis);TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%
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. |
| 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 Information
Symbol(GHS)
Signal word
Warning
Hazard statements
H302：Harmful if swallowed
H315：Causes skin irritation
H319：Causes serious eye irritation
H335：May cause respiratory irritation
Precautionary statements
P261：Avoid breathing dust/fume/gas/mist/vapours/spray.
P301+P312：IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352：IF ON SKIN: wash with plenty of soap and water.
P304+P340：IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338：IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
Description
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.
