Tungsten diselenide, 99.995%

Name: Tungsten diselenide, 99.995%
Brand: Vaqora Chemicals
SKU: VQ-015020

About Tungsten diselenide, 99.995%

Tungsten diselenide (CAS 12067-46-8) is a refractory / heavy metal compound offered by Vaqora Chemicals at a purity of 99.995%. Its molecular formula is Se2W and its molecular weight is 341.8 g/mol. The IUPAC name is bis(selanylidene)tungsten. Common synonyms include Tungsten (IV) selenide and Tungsten selenide.

It is supplied as a grey to dark grey solid. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span optics and photonics, battery and energy materials and solar and photovoltaic research. Typical end-use sectors are academic and industrial research.

Available in 1 g and 5 g packs, Tungsten diselenide is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Optics & photonics
Battery & energy materials
Solar & photovoltaic research

Industries

Specifications & identifiers

Chemical identifiers
Product name	Tungsten diselenide, 99.995%
Catalogue No.	VQ-015020
CAS Number	12067-46-8
IUPAC name	bis(selanylidene)tungsten
Molecular formula	Se₂W
Molecular weight	341.8 g/mol
Exact mass	343.784
Purity / assay	99.995%
HSN code	29332990
InChIKey	ROUIDRHELGULJS-UHFFFAOYSA-N
SMILES	[Se]=[W]=[Se]
PubChem CID	82910

Physical properties
Physical form	Solid
Appearance	Grey to dark grey solid
H-bond donors / acceptors	0 / 0
TPSA	0 Å²
Synonyms	Tungsten (IV) selenide, Tungsten selenide, Tungsten selenide (WSe2), Tungsten(IV) selenide, Tungsten selenide, Tungsten diselenide, Tungsten (IV) selenide, Bis(selenido)tungsten, WSe2, Tungsten Selenide Flakes, Tungsten Diselenide Powder, CVD Method Monolayer WSe2, Tungsten diselenide, Crystal, 99.995%, Mechanically Exfoliated Monolayer WSe2 On Substrates

Safety & hazard information (GHS)

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H301+H331Toxic if swallowed or if inhaled
H301Toxic if swallowed
H331Toxic if inhaled
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P261, P264, P270, P271, P273, P301 + P316, P304 + P340, P316, P319, P321, P330, P391, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Tungsten diselenide, 99.995%?

The CAS Registry Number of Tungsten diselenide, 99.995% is 12067-46-8. It is also known as Tungsten (IV) selenide, Tungsten selenide, Tungsten selenide (WSe2).

What is the molecular formula and molecular weight of Tungsten diselenide, 99.995%?

Tungsten diselenide, 99.995% has the molecular formula Se2W and a molecular weight of 341.8 g/mol. Its IUPAC name is bis(selanylidene)tungsten.

Which grade and pack sizes of Tungsten diselenide, 99.995% can I order?

We supply Tungsten diselenide, 99.995% in (99.995%) grade, in 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tungsten diselenide, 99.995%?

Yes. Every lot of Tungsten diselenide, 99.995% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Tungsten diselenide, 99.995% be shipped internationally?

Yes. Tungsten diselenide, 99.995% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.