TUNGSTEN SELENIDE
- Product Name
- 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
- Formula Weight
- 341.78
- MOL File
- 12067-46-8.mol
TUNGSTEN SELENIDE Property
- 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
- RIDADR
- UN3283 - class 6.1 - PG 3 - EHS - Selenium compound, solid, n.o.s., HI: all (not BR)
- TSCA
- Yes
- HazardClass
- 9
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H373May cause damage to organs through prolonged or repeated exposure
H410Very toxic to aquatic life with long lasting effects
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P403+P233Store in a well-ventilated place. Keep container tightly closed.
N-Bromosuccinimide Price
- Product number
- 808822
- Product name
- Tungsten diselenide
- Purity
- Crystal, 99.995%
- Packaging
- 1ea
- Price
- $1330
- Updated
- 2024/03/01
- Product number
- 901483
- Product name
- Tungsten selenide
- Purity
- single crystalline monolayer flakes on sapphire
- Packaging
- 1EA
- Price
- $391
- Updated
- 2023/06/20
- Product number
- 013084
- Product name
- Tungsten(IV) selenide
- Purity
- 99.8% (metals basis)
- Packaging
- 10g
- Price
- $95.2
- Updated
- 2024/03/01
- Product number
- 013084
- Product name
- Tungsten(IV) selenide
- Purity
- 99.8% (metals basis)
- Packaging
- 50g
- Price
- $318
- Updated
- 2023/06/20
TUNGSTEN SELENIDE Chemical Properties,Usage,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.
Uses
The two dimensional layered inorganic nanomaterials have drawn significant attention recently owing to their thickness dependent physical and chemical properties. They find applications in photocatalysis, phtotovoltaics, gas sensing, lithium ion batteries, field effect transistors, spintronics etc. Transition metal dischalcogenides represent an important class of inorganic 2D materials having the aforementioned applications.
Uses
Owing to the thickness dependent physical and chemical properties, the two dimensional layered inorganic nanomaterials have drawn significant attention recently. They find applications in photocatalysis, phtotovoltaics, gas sensing, lithium ion batteries, field effect transistors, spintronics etc. Transition metal dichalcogenides represent an important class of inorganic 2D materials having aforementioned applications. The CVD grown monolayer films of MoS2, MoSe2, WS2 and WSe2 on insulating substrates such as SiO2 and sapphire are well suited for electronic and photovoltaic devices.
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
TUNGSTEN SELENIDE Preparation Products And Raw materials
Raw materials
Preparation Products
TUNGSTEN SELENIDE Suppliers
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View Lastest Price from TUNGSTEN SELENIDE manufacturers
- Product
- TUNGSTEN SELENIDE 12067-46-8
- Price
- US $1.00/g
- Min. Order
- 50 g
- Purity
- 99.9%
- Supply Ability
- 20kg
- Release date
- 2018-12-18