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Sigma-Aldrich

Tungsten diselenide

Crystal, 99.995%

Synonym(s):

Tungsten (IV) selenide, Tungsten selenide

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About This Item

Linear Formula:
WSe2
CAS Number:
Molecular Weight:
341.76
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.23

Quality Level

description

Electrical properties: Semiconductor, p-type

assay

99.995%

form

crystals

L × W × H

0.5 cm × 0.5 cm × 0.1-0.15 mm, typical size, some variation in dimensions may occur with different batches

primary crystallite size

~10 mm (hexagonal)

SMILES string

[Se]=[W]=[Se]

InChI

1S/2Se.W

InChI key

ROUIDRHELGULJS-UHFFFAOYSA-N

Related Categories

Application

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.

Preparation Note

Store under nitrogen atmosphere.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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