808822

Tungsten diselenide

Crystal, 99.995%

• Synonym(s): Tungsten (IV) selenide, Tungsten selenide
• Linear Formula: WSe₂
• CAS Number: 12067-46-8
• Molecular Weight: 341.76
• MDL number: MFCD00049703
• UNSPSC Code: 26111700
• PubChem Substance ID: 329769125
• NACRES: NA.23

Properties

• Quality Level: 100
• 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

Description

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.

Safety Information

• pictograms: GHS06,GHS08,GHS09
• signalword: Danger
• hcodes: H301 + H331,H373,H410
• pcodes: P273 - P301 + P310 + P330 - P304 + P340 + P311 - P314
• 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