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CAS 17955-88-3

CAS 17955-88-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 17955-88-3
CAS 17955-88-3PubChem CID 87373

Caprylyl trisiloxane

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 — Cosmetic Ingredient Review (CIR)

IUPAC name
trimethyl-(methyl-octyl-trimethylsilyloxysilyl)oxysilane
Molecular formula
C15H38O2Si3
Molecular weight
334.72 g/mol
Exact mass
334.21796005 Da
Topological polar surface area
18.5 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

1,1,1,3,5,5,5-Heptamethyl-3-octyltrisiloxaneCaprylyl methiconeTrisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-EINECS 241-881-3heptamethyloctyltrisiloxaneQ95M2P1KJLoctylheptamethyltrisiloxaneSILSOFT 034
16 more reported names
SILCARE 41M15SS 3408BRB CAPRYLYL METHICONEBIS(TRIMETHYLSILOXY)OCTYLMETHYLSILANERefChem:573792CAPRYLYL METHICONE [INCI]CAPRYLYL TRISILOXANE [INCI]241-881-33-OCTYLHEPTAMETHYLTRISILOXANEUNII-Q95M2P1KJLC15H38O2Si3SCRSFLUHMDMRFP-UHFFFAOYSA-N3-OCTYLHEPTAMETHYLTRISILOXANE?AS-90787DB-3155403-octyl-1,1,1,3,5,5,5-heptamethyltrisiloxane
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 17955-88-3

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How CAS 17955-88-3 is used on this site

CAS 17955-88-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 17955-88-3 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.