TUNGSTEN SELENIDE
- CAS No.
- 12067-46-8
- Chemical Name:
- TUNGSTEN SELENIDE
- Synonyms
- WSe2 Crystal;TUNGSTEN SELENIDE;TUNGSTEN DISELENIDE;Tungsten(Ⅳ) selenide;TUNGSTEN (IV) SELENIDE;Tungsten Selenium (IV);bis(selanylidene)tungsten;CVD Method Monolayer WSe2;Tungsten(IV) selenide lump;IV) 99.9%TUNGSTEN SELENIDE
- CBNumber:
- CB5120338
- Molecular Formula:
- Se2W
- Molecular Weight:
- 341.78
- MOL File:
- 12067-46-8.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/5/31 14:50:46
| Density | 9.32 |
|---|---|
| RTECS | YO7714000 |
| form | Powder, 10μm |
| color | gray hexagonal, hexane crystals, crystalline |
| Water Solubility | Insoluble in water. |
| Exposure limits |
ACGIH: TWA 0.2 mg/m3; TWA 3 mg/m3 NIOSH: IDLH 1 mg/m3; TWA 5 mg/m3; TWA 0.2 mg/m3; STEL 10 mg/m3 |
| CAS DataBase Reference | 12067-46-8(CAS DataBase Reference) |
| EPA Substance Registry System | Tungsten selenide (WSe2) (12067-46-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H301+H331-H373-H410 | |||||||||
| Precautionary statements | P260-P301+P330+P331+P310-P304+P340+P311-P403+P233 | |||||||||
| RIDADR | UN3283 - class 6.1 - PG 3 - EHS - Selenium compound, solid, n.o.s., HI: all (not BR) | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 9 | |||||||||
| NFPA 704 |
|
TUNGSTEN SELENIDE price More Price(4)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 901483 | Tungsten selenide single crystalline monolayer flakes on sapphire | 12067-46-8 | 1EA | ₹32580 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 808822 | Tungsten diselenide Crystal, 99.995% | 12067-46-8 | 1EA | ₹98929.68 | 2022-06-14 | Buy |
| ALFA India | ALF-013084-18 | Tungsten(IV) selenide, 99.8% (metals basis) | 12067-46-8 | 50g | ₹24190 | 2022-05-26 | Buy |
| ALFA India | ALF-013084-09 | Tungsten(IV) selenide, 99.8% (metals basis) | 12067-46-8 | 10g | ₹9288 | 2022-05-26 | Buy |
TUNGSTEN SELENIDE Chemical Properties,Uses,Production
Chemical Properties
-325 mesh black powder(s); dry, solid lubricant with exceptional stability at high temperatures, and in high vacuum; used in the form of 99.8% pure material as a sputtering target to produce lubricant films [HAW93] [CER91] [AES93]
Uses
Tungsten(IV) selenide is used as an important compound in electrochemical solar cells. It acts as a stable semiconductor.
Definition
Lamellarstructured, dry, solid lubricant with exceptionally high temperature and high vacuum stability. Retains its lubricity to temperatures as low as ?265C.
Hazard
TLV: 5 mg(W)/m3.
Structure and conformation
Tungsten diselenide, WSe2, has a hexagonal crystalline structure comparable to MoS2. Every tungsten atom is covalently bonded to six selenium ligands in a trigonal prismatic coordination sphere, and each selenium is bonded to three
tungsten atoms in a pyramidal geometry. Heating thin films of tungsten under pressure from gaseous selenium and high
temperatures ( . 527℃/800K) using the sputter deposition technique leads to the films crystallizing in hexagonal structures with the correct stoichiometric ratio.
W+ 2Se→WSe2
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CHEMSWORTH | +91-261-2397244 | New Delhi, India | 6707 | 30 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29899 | 58 | Inquiry |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | China | 39916 | 58 | Inquiry |
| Henan Alfa Chemical Co., Ltd | +8618339805032 | China | 13141 | 58 | Inquiry |
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| Alfa Chemistry | +1-5166625404 | United States | 21317 | 58 | Inquiry |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | China | 9003 | 58 | Inquiry |
| LEAPCHEM CO., LTD. | +86-852-30606658 | China | 43348 | 58 | Inquiry |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +undefined18621343501 | China | 33350 | 58 | Inquiry |
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