Is Tungsten Disulfide safe in cosmetics?
Tungsten Disulfide has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
Moderate
Cosmetic Ingredient
Tungsten Disulfide
Also known as: EINECS 235-243-3, WS2, [WS2]
INCI: TUNGSTEN DISULFIDE
Tungsten Disulfide (CAS 12138-09-9) is a cosmetic cosmetic ingredient functioning as Not widely established in cosmetics; potential as a lubricant/slip agent. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 12138-09-9 →
Auto-generated CPSR Part A draft with source citations
Function
Not widely established in cosmetics; potential as a lubricant/slip agent (industrial applications primarily)
Safety Rating
MODERATE
Chemistry & Identifiers
IUPAC Name
bis(sulfanylidene)tungsten
InChIKey
ITRNXVSDJBHYNJ-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not specifically regulated for cosmetic use
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Tungsten Disulfide.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
100 - 1,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Abrasive
Deodorizer
Expert Verdict
Expert safety assessment and concern-level summary for Tungsten Disulfide.
Known Synonyms
EINECS 235-243-3
WS2
[WS2]
Chemical Function
Abrasive
Deodorizer
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Tungsten Disulfide allowed in the EU?
Tungsten Disulfide EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tungsten Disulfide do in cosmetics?
Tungsten Disulfide functions as: Not widely established in cosmetics; potential as a lubricant/slip agent (industrial applications primarily). It is classified as a cosmetic ingredient in our database. CAS number: 12138-09-9.
Is Tungsten Disulfide used outside cosmetics?
Tungsten Disulfide also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Tungsten Disulfide compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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