Hexyl Methicone

Also known as: 1-Hexyl-1,3,3,3-tetramethyl-1-((trimethylsilyl)oxy)disiloxane

INCI: HEXYL METHICONE

Hexyl Methicone (CAS 1873-90-1) is a cosmetic cosmetic ingredient functioning as Skin conditioning agent, hair conditioning agent (silicone polymer with C6. 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 1873-90-1 →

Auto-generated CPSR Part A draft with source citations
Function
Skin conditioning agent, hair conditioning agent (silicone polymer with C6 alkyl chains)
Safety Rating
EXCELLENT

Chemistry & Identifiers

Formula
C13H34O2Si3
MW
306.66 g/mol
EC Number
428-700-5
PubChem CID
120595
IUPAC Name
hexyl-methyl-bis(trimethylsilyloxy)silane
InChIKey
PNJMJEXVQAFSBS-UHFFFAOYSA-N

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes Permitted — no restrictions; not listed in 21 CFR 700

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Hexyl Methicone.

Calculate MoS for your specific formulation with the MoS Calculator.

EU CLP Annex VI Harmonized Classification

Legally binding harmonized classification per Regulation (EC) No 1272/2008 (CLP) Annex VI.

Signal Word
Warning
Pictograms
Harmful / Irritant
Hazard Class and Category
Acute Tox. 4 *; Aquatic Chronic 4
Hazard Statements
  • H332 Harmful if inhaled
  • H413 May cause long lasting harmful effects to aquatic life

Inserted via ATP: ATP01

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
Ceased manufacture
Substance Type
SUBSTANCE
SVHC Candidate
No
Hazard classification: Restricted (Annex XVII)

Expert Verdict

Expert safety assessment and concern-level summary for Hexyl Methicone.

Known Synonyms

1-Hexyl-1,3,3,3-tetramethyl-1-((trimethylsilyl)oxy)disiloxane

Frequently Asked Questions

Is Hexyl Methicone safe in cosmetics?

Hexyl Methicone has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.

Is Hexyl Methicone allowed in the EU?

Hexyl Methicone EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Hexyl Methicone do in cosmetics?

Hexyl Methicone functions as: Skin conditioning agent, hair conditioning agent (silicone polymer with C6 alkyl chains). It is classified as a cosmetic ingredient in our database. CAS number: 1873-90-1.

Is Hexyl Methicone used outside cosmetics?

Hexyl Methicone also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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