二硫化钨

Description

Tungsten disulfide · CAS 12138-09-9 · S2W.

Identification

CAS Registry Number	12138-09-9
PubChem CID	82938
Molecular formula	S2W
IUPAC name	bis(sulfanylidene)tungsten

Computed Descriptors

Molecular Weight	248.0
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	247.895076
Monoisotopic Mass	247.895076
Topological Polar Surface Area	64.2
Heavy Atom Count	3
Formal Charge	0
Complexity	18.3

Physical description & handling notes

• CBI; Large Crystals; Other Solid
• Greyish-black solid; [Hawley] Black powder with an odor of rotten eggs; [MSDSonline]

Regulatory Status

GHS notification summary	42.8% (59 / 138)

GHS Hazard Classification

GHS notification summary	42.8% (59 / 138)
Reported hazard statements	H315 (57.2%), H319 (57.2%), H335 (57.2%)

Documented Uses

• Used as a solid and aerosol lubricant; [Hawley]
• 2020: 1,000,000 - <2,500,000 lb
• Other (requires additional information)
• All Other Chemical Product and Preparation Manufacturing
• Not Known or Reasonably Ascertainable

Synonyms

Tungsten disulfide; tungsten(IV) sulfide; disulfidotungsten; CHEBI:30521; (WS2); Tungsten Sulphuratum; RefChem:57431; 12138-09-9; Tungsten disulphide; Tungsten sulfide (WS2); bis(sulfanylidene)tungsten; MFCD00011467; EINECS 235-243-3; Bulk WS2 powder; Bis(sulfido)tungsten; Monolayer WS2 Powder

Frequently Asked Questions

What are the CAS number and molecular formula of Tungsten disulfide?

CAS 12138-09-9; molecular formula S2W; molecular weight — g/mol.

What other names is Tungsten disulfide known by?

Tungsten disulfide, tungsten(IV) sulfide, disulfidotungsten, CHEBI:30521, (WS2), Tungsten Sulphuratum.

Is Tungsten disulfide classified as hazardous?

42.8% of GHS notifications report no hazard classification (59 of 138).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.