A7769612
Tungsten silicide , -325 mesh, 99.5% , 12039-88-2
CAS NO.：12039-88-2
Empirical Formula: Si2W
Molecular Weight: 240.01
MDL number: MFCD00049704
EINECS: 234-909-0
| Pack Size | Price | Stock | Quantity |
| 10G | RMB119.20 | In Stock |
|
| 50G | RMB424.80 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT 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) |
Description and Uses
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.
Oxidation-resistant coatings, electrical resistance and refractory applications.
Safety
| Safety Statements | 22 |
| WGK Germany | 3 |
| TSCA | Yes |
