What function does TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE serve in cosmetics?

According to the EU CosIng inventory, TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE carries the following function designation(s): VISCOSITY CONTROLLING, DISPERSING NON-SURFACTANT, SURFACE MODIFIER, SURFACTANT.

What other records share CAS 381245-95-0?

CAS 381245-95-0 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE?

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

InventoryRef cosing-live-1048522024-08-09

TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

Trimethoxysilylethyl Butyl Dimethicone is the synthetic polymer that conforms generally to the formula

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

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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.

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Exact external identity check

not_found

No complete-name PubChem match was verified. The material may be a mixture, trade-style INCI identity or be indexed under another identifier; this result must not be read as proof that no related chemistry exists.

Exact CosIng INCI name equals a PubChem synonym · Checked 2026-08-31

Official European Commission record

CosIng substance ID: 104852
Published in the Official Journal: Yes
Recorded by the Commission: 2024-08-09

Open this entry in the official CosIng database

Fields as published by the European Commission. The link opens the entry itself, not a search for it.

Inventory details for TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

INCI name

TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

Description

Trimethoxysilylethyl Butyl Dimethicone is the synthetic polymer that conforms generally to the formula

Record provenance

Inventory reference: cosing-live-104852
Imported identity: TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE
Source update: 2024-08-09

European Commission CosIng source notes

Annex records for TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

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Key data

CAS

381245-95-0

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Restriction

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Function

VISCOSITY CONTROLLING: Increasing or decreasing the viscosity (thickness) of cosmetics.
DISPERSING NON-SURFACTANT: Facilitating the dispersion of solids in liquids. They function primarily by coating the solid through the process of adsorption, thus changing the surface characteristic of the suspended solid.
SURFACE MODIFIER: Applied to other cosmetic components to make them more hydrophilic or hydrophobic, or to modify their physical/chemical properties.
SURFACTANT: Helping other ingredients that normally do not mix to dissolve or disperse in one another. Surfactants lower the surface tension of water or reduce the interfacial tension between immiscible components.

Official EU ingredient-name evidence

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

#29257 · TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

Ingredients with overlapping formulation functions

POLYVINYL BENZYLIMIDAZOLINIUM CHLORIDEADHESIVE, ANTIMICROBIAL, BINDING, HAIR CONDITIONING, HAIR WAVING OR STRAIGHTENING, SURFACE MODIFIER

SH-DSRNA-2 HYDROXYPROPYL PEG-3 PROPYL CHOLESTERYLCARBAMATEHAIR CONDITIONING; HUMECTANT; SKIN PROTECTING; SURFACE MODIFIER; SKIN CONDITIONING - MISCELLANEOUS

SODIUM 3-MERCAPTOPROPANE SULFONATEDENATURANT, HAIR CONDITIONING, pH ADJUSTERS, SURFACE MODIFIER

STEARYL CANNABIS SEEDATEFILM FORMING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SURFACE MODIFIER

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE appears in the CosIng inventory

The CosIng inventory lists TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE 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.

TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE is also tagged with 4 cosmetic functions 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

TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE 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, TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE carries the following function designation(s):

CAS 381245-95-0 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.

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Source note for TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE

This page reproduces the CosIng inventory entry for TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE 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 TRIMETHOXYSILYLETHYL BUTYL DIMETHICONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

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