Tungsten diselenide
ALDRICH/808822 - Crystal, 99.995%
Synonym: Tungsten (IV) selenide; Tungsten selenide
CAS Number: 12067-46-8
Empirical Formula (Hill Notation): Se2W
Molecular Weight: 341.76
MDL Number: MFCD00049703
Linear Formula: WSe2
Product Type: Chemical
| assay | 99.995% |
| description | Electrical properties: Semiconductor, p-type |
| form | crystals |
| InChI | 1S/2Se.W |
| InChI key | ROUIDRHELGULJS-UHFFFAOYSA |
| 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) |
| Quality Level | 100  |
| SMILES string | [Se]=[W]=[Se] |
| 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. |
| Symbol |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301 + H331 - H373 - H410 |
| Precautionary statements | P273 - P301 + P310 + P330 - P304 + P340 + P311 - P314 |
| RIDADR | UN3283 - class 6.1 - PG 3 - EHS - Selenium compound, solid, n.o. |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.995% |
| UNSPSC | 26111700 |