Is Stearoxytrimethylsilane safe in cosmetics?
Stearoxytrimethylsilane has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Stearoxytrimethylsilane
Also known as: EINECS 242-554-8, UNII-9862TW94B2
INCI: STEAROXYTRIMETHYLSILANE
Stearoxytrimethylsilane (CAS 18748-98-6) is a cosmetic cosmetic ingredient functioning as Emollient, skin conditioning 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 18748-98-6 →
Auto-generated CPSR Part A draft with source citations
Function
Emollient, skin conditioning agent
Safety Rating
GOOD
Chemistry & Identifiers
IUPAC Name
trimethyl(octadecoxy)silane
InChIKey
GVPDNFYOFKBFEN-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not restricted; no CIR monograph specifically available; generally regarded as safe in current use patterns
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Stearoxytrimethylsilane.
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
1 - 10 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Softener and conditioner
Expert Verdict
Expert safety assessment and concern-level summary for Stearoxytrimethylsilane.
Known Synonyms
EINECS 242-554-8
UNII-9862TW94B2
Chemical Function
Softener and conditioner
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Stearoxytrimethylsilane allowed in the EU?
Stearoxytrimethylsilane EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Stearoxytrimethylsilane do in cosmetics?
Stearoxytrimethylsilane functions as: Emollient, skin conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: 18748-98-6.
Is Stearoxytrimethylsilane used outside cosmetics?
Stearoxytrimethylsilane 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 Stearoxytrimethylsilane compliance across multiple jurisdictions:
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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