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| | TUNGSTEN SILICIDE Basic information |
| Product Name: | TUNGSTEN SILICIDE | | 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% | | CAS: | 12039-88-2 | | MF: | Si2W | | MW: | 240.01 | | EINECS: | 234-909-0 | | Product Categories: | Ceramics;Metal and Ceramic Science;Silicides | | Mol File: | 12039-88-2.mol |  |
| | TUNGSTEN SILICIDE Chemical Properties |
| Melting point | 2165°C | | density | 9,88 g/cm3 | | form | Powder | | Specific Gravity | 9.88 | | 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 Statements | 22 | | WGK Germany | 3 | | TSCA | Yes |
| | TUNGSTEN SILICIDE Usage And Synthesis |
| 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 |
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