Tungsten sulfide - ≥99.9% metals basis, 2 μm , CAS No.12138-09-9

CAS: 12138-09-9 Cat. No.: T107763 Formula: WS2 Molecular Weight: 247.97 EC Number: 682-620-7 PubChem CID: 82938
AVAILABLE TO ORDER
GRADE & PURITY ≥99.9% metals basis 2 μm
Synonyms
Tungsten Disulfide (WS2) Ultrafinepowder | [WS2] | Few Layers WS2 Nano Powder | (WS2) | Few Layers Nano WS2 suspension 0.1mg/mL(C: 0.1mg/ml, solvent: water) | EINECS 235-243-3 | Few Layers Nano WS2 suspension 0.1mg/mL(C: 0.1mg/ml, solvent: IPA) | WS2 powd
Storage
Room temperature
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
50g
T107763-50g
—
3 In stock

€20.74

€31.15
Save €10.41 (33.43%)
250g
T107763-250g
—
2 In stock

€73.67

€110.98
Save €37.31 (33.62%)
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Why this grade

≥99.9% metals basis, 2 μm for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 125 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Tungsten(IV) sulfide is an inorganic chemical compound that occurs naturally as the rare mineral tungstenite. It is most commonly used as hydrogen and lithium storage material, as material for lithium battery cathodes, as a component of batteries and other electrochemical devices, as a dry lubricant, and as a catalyst in hydrodesulfurization of crude oil. Due to its layered structure, tungsten(IV) disulfide forms inorganic nanotubules, which are being investigated for potential applications such as epoxy reinforcement, uses in impact-absorbing materials, and as a means to preserve or guide nanometer-scale amounts of material.
A component of catalysts and batteries

Specifications

Synonyms
Tungsten Disulfide (WS2) Ultrafinepowder | [WS2] | Few Layers WS2 Nano Powder | (WS2) | Few Layers Nano WS2 suspension 0.1mg/mL(C: 0.1mg/ml, solvent: water) | EINECS 235-243-3 | Few Layers Nano WS2 suspension 0.1mg/mL(C: 0.1mg/ml, solvent: IPA) | WS2 powd
Specifications & Purity
≥99.9% metals basis, 2 μm
Storage
Room temperature
Shipped In
Normal
Purity
≥99.9% metals basis
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/504755643
Canonical Smiles
S=[W]=S
IUPAC Name
bis(sulfanylidene)tungsten
InChIKey
ITRNXVSDJBHYNJ-UHFFFAOYSA-N
INCHI
1S/2S.W
Isomeric SMILES
S=[W]=S
PubChem CID
82938
Molecular Weight
247.97

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassTransition metal organides
SubclassTransition metal sulfides
Intermediate Tree Nodes Not available
Direct ParentTransition metal sulfides
Alternative Parents Inorganic sulfides  Inorganic salts  
Molecular FrameworkNot available
Substituents Transition metal sulfide - Inorganic sulfide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as transition metal sulfides. These are inorganic compounds containing a sulfur atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a transition metal.
External Descriptors sulfide salt
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

13 results found

Lot NumberCertificate TypeDateItem
B2624476Certificate of AnalysisJan 21, 2026 T107763
B2624477Certificate of AnalysisJan 21, 2026 T107763
B2624478Certificate of AnalysisJan 21, 2026 T107763
B2223169Certificate of AnalysisDec 10, 2025 T107763
H2521779Certificate of AnalysisJul 25, 2025 T107763
H2521780Certificate of AnalysisJul 25, 2025 T107763
H2521781Certificate of AnalysisJul 25, 2025 T107763
H2202542Certificate of AnalysisJun 18, 2022 T107763
H2202554Certificate of AnalysisJun 18, 2022 T107763
H2202555Certificate of AnalysisJun 18, 2022 T107763
G1830044Certificate of AnalysisMay 11, 2022 T107763
B2223173Certificate of AnalysisJan 03, 2022 T107763
B2223185Certificate of AnalysisJan 03, 2022 T107763
Chemical and Physical Properties
x_melt_point_char1250°C
Molecular Weight248.000 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass247.895 Da
Monoisotopic Mass247.895 Da
Topological Polar Surface Area64.200 Ų
Heavy Atom Count3
Formal Charge0
Complexity18.300
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
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