InventoryRef 9322909/03/2016

TRIMETHYLPENTYL POLYSILSESQUIOXANE

Q: How do I check if my formula contains TRIMETHYLPENTYL POLYSILSESQUIOXANE?

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

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Inventory details for TRIMETHYLPENTYL POLYSILSESQUIOXANE

INCI name

TRIMETHYLPENTYL POLYSILSESQUIOXANE

Description

Trimethylpentyl Polysilsesquioxane is a resinous material composed of a mixture of three-dimensional siloxane polymers and oligomers with cage structures. For the oligomers, each silicon atom in the polysilsesquioxane is connected via oxygen atoms to three other silicon atoms and can be represented by the empirical formulation RSiO3/2 where R represents the trimethylpentyl group. For the larger polymeric polysilsesquioxanes, some of the silicon atoms are not connected to other silicon atoms and instead have a silanol (SiOH) group. Trimethylpentyl Polysilsesquioxane is prepared by the hydrolysis and condensation of 2,4,4-trimethylpentyl trimethoxysilane

Annex records for TRIMETHYLPENTYL POLYSILSESQUIOXANE

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Key data

CAS

190732-67-3,444619-08-3

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Restriction

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Function

NAIL CONDITIONING

How TRIMETHYLPENTYL POLYSILSESQUIOXANE appears in the CosIng inventory

The CosIng inventory lists TRIMETHYLPENTYL POLYSILSESQUIOXANE 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.

TRIMETHYLPENTYL POLYSILSESQUIOXANE 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

TRIMETHYLPENTYL POLYSILSESQUIOXANE 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, TRIMETHYLPENTYL POLYSILSESQUIOXANE carries the following function designation(s):

NAIL CONDITIONING

CAS 190732-67-3,444619-08-3 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.

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Source note for TRIMETHYLPENTYL POLYSILSESQUIOXANE

This page reproduces the CosIng inventory entry for TRIMETHYLPENTYL POLYSILSESQUIOXANE 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 TRIMETHYLPENTYL POLYSILSESQUIOXANE 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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