Skip to main content
InventoryRef 9704615/04/2019

CAPRYLYL TRISILOXANE

Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-

CAPRYLYL TRISILOXANE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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
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.

Inventory details for CAPRYLYL TRISILOXANE

INCI name

CAPRYLYL TRISILOXANE

Description

Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl-

Record provenance

Inventory reference
97046
Imported identity
CAPRYLYL TRISILOXANE
Source update
15/04/2019
European Commission CosIng source notes

Key data

Restriction
Function
SKIN CONDITIONING
Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

Records sharing a CAS or EC identity

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How CAPRYLYL TRISILOXANE appears in the CosIng inventory

The CosIng inventory lists CAPRYLYL TRISILOXANE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CAPRYLYL TRISILOXANE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

CAPRYLYL TRISILOXANE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, CAPRYLYL TRISILOXANE carries the following function designation(s):

CAS 17955-88-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for CAPRYLYL TRISILOXANE

This page reproduces the CosIng inventory entry for CAPRYLYL TRISILOXANE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research CAPRYLYL TRISILOXANE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

Tools & next steps

Check your formula

Scan a full INCI list to detect CAPRYLYL TRISILOXANE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to CAPRYLYL TRISILOXANE, its identifiers or nearby name variants.

Search