Caprylyl trisiloxane
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Basic information
- CAS
17955-88-3- Standard SMILES
CCCCCCCC[Si](C)(O[Si](C)(C)C)O[Si](C)(C)C- InChIKey
SCRSFLUHMDMRFP-UHFFFAOYSA-N- Molecular formula
- C15H38O2Si3
- Average molar mass
- 334.72 g/mol
- Monoisotopic mass
- 334.21796005
Overview
The Expert Panel for Cosmetic Ingredient Safety concluded that the following 30 dimethicone, methicone, and substituted-methicone polymers are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for use of these ingredients in products that may be incidentally inhaled when applied using airbrush devices: Caprylyl Methicone
Names & identifiers
- Preferred name
- Caprylyl trisiloxane
- IUPAC
- trimethyl-(methyl-octyl-trimethylsilyloxysilyl)oxysilane
- English name
- 3-OCTYLHEPTAMETHYLTRISILOXANE
- Molecular formula
- C15H38O2Si3
- Molecular weight
- 334.72
Names & synonyms
17955-88-31,1,1,3,5,5,5-Heptamethyl-3-octyltrisiloxaneCaprylyl trisiloxaneCaprylyl methiconeTrisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-EINECS 241-881-3heptamethyloctyltrisiloxaneQ95M2P1KJLoctylheptamethyltrisiloxaneSILSOFT 034SILCARE 41M15SS 3408
Show more names
silsoft34SILSOFT034OctylsiliconeoilH-034alkyl silicone oil IOTA 10013-OCTYLHEPTAMETHYLTRISILOXANEMethyloctylbis(trimethylsiloxy)silane
BRB CAPRYLYL METHICONEDTXSID6051807BIS(TRIMETHYLSILOXY)OCTYLMETHYLSILANERefChem:573792DTXCID6030362CAPRYLYL METHICONE [INCI]CAPRYLYL TRISILOXANE [INCI]241-881-3
Database identifiers
- CAS
17955-88-3- PubChem CID
- 87373
- DTXSID
DTXSID6051807
Properties
Computed structural propertiesFilling in
- Topological polar surface area
- 18.5 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 11
- Heavy atoms
- 20
- Formal charge
- 0
- Complexity
- 241
Experimental & physicochemical properties
CosmeticsCosmetic ingredients (Caprylyl Methicone) -> CIR (Cosmetic Ingredient Review)
Physical DescriptionLiquid
Physicochemical properties
- Melting point
- -62 °C · -62°C
- Boiling point
- 84 °C · 84°C 0,3mm
- Density
- 0 · 0,819 g/cm3
- vapor pressure
- 0.64 Pa · 0.64Pa at 25℃
- refractive index
- 1.4128 · 1.4128
- Flash point
- 69 °C · 69°C
- Specific Gravity
- 0.819 · 0.819
- Water Solubility
- 28 ng/L · 28ng/L at 20℃
- Hydrolytic Sensitivity
- 1 · 1: no significant reaction with aqueous systems
- Cosmetics Ingredients Functions
- SKIN CONDITIONING
- Cosmetic Ingredient Review (CIR)
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 98% (49 of 50) of all reports.
Not Classified
Aggregated GHS information provided per 50 reports by companies from 2 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-
Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.
Status: Active Update: 13-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/21797
Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazard Classes and CategoriesNot Classified
Toxicology
Toxicity Summary
The Expert Panel for Cosmetic Ingredient Safety concluded that the following 30 dimethicone, methicone, and substituted-methicone polymers are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for use of these ingredients in products that may be incidentally inhaled when applied using airbrush devices: Caprylyl Methicone
Chemistry & industry
Uses & manufacturing
UsesCIR ingredient: Caprylyl Methicone
U.S. Production2023: 550,000 - <1,000,000 lb
Industry UsesOther
Household ProductsInformation on 11 consumer products that contain Caprylyl Methicone in the following categories is provided:
General Manufacturing Information
Other (requires additional information)
Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-: ACTIVE
Applications
Usescaprylyl methicone (3-OCTYLHEPTAMETHYLTRISILOXANE) is used for its occlusive properties. It can help retain water on the surface of the skin.
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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