TUNGSTEN SELENIDE

ChemicalBook > CAS DataBase List > 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

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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)

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Safety

RIDADR: UN3283 - class 6.1 - PG 3 - EHS - Selenium compound, solid, n.o.s., HI: all (not BR)
TSCA: Yes
HazardClass: 9

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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.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 808822
Product name: Tungsten diselenide
Purity: Crystal, 99.995%
Packaging: 1ea
Price: $1330
Updated: 2024/03/01

Sigma-Aldrich

Product number: 901483
Product name: Tungsten selenide
Purity: single crystalline monolayer flakes on sapphire
Packaging: 1EA
Price: $391
Updated: 2023/06/20

Alfa Aesar

Product number: 013084
Product name: Tungsten(IV) selenide
Purity: 99.8% (metals basis)
Packaging: 10g
Price: $95.2
Updated: 2024/03/01

Alfa Aesar

Product number: 013084
Product name: Tungsten(IV) selenide
Purity: 99.8% (metals basis)
Packaging: 50g
Price: $318
Updated: 2023/06/20

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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

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View Lastest Price from TUNGSTEN SELENIDE manufacturers

Career Henan Chemical Co

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

12067-46-8, TUNGSTEN SELENIDERelated Search:

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TUNGSTEN DISELENIDE

TUNGSTEN (IV) SELENIDE

TUNGSTEN SELENIDE

TUNGSTEN (IV) SELENIDE, 99.8% (METALS BASIS)

Tungsten(Ⅳ) selenide

Tungsten(IV) selenide (WSe2)

IV) 99.9%TUNGSTEN SELENIDE

Tungsten diselenide Crystal, 99.995%

Tungsten(IV) selenide lump

Tungsten(IV) selenide, 99.99%, trace metals basis

TUNGSTEN SELENIDE ISO 9001：2015 REACH

WSe2 Crystal

bis(selanylidene)tungsten

Tungsten Selenium (IV)

Mechanically Exfoliated Monolayer WSe2 On Substrates

CVD Method Monolayer WSe2

12067-46-8

WSe2

Se2W