What other records share CAS 221326-46-1?

CAS 221326-46-1 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.

InventoryRef 9323008/10/2015

ISOBUTYL POLYSILSESQUIOXANE

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

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Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octakis(2-methylpropyl)-

ISOBUTYL 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 ISOBUTYL POLYSILSESQUIOXANE

INCI name

ISOBUTYL POLYSILSESQUIOXANE

Description

Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octakis(2-methylpropyl)-

Annex records for ISOBUTYL POLYSILSESQUIOXANE

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Key data

CAS

221326-46-1

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Restriction

—

Function

NAIL CONDITIONING

How ISOBUTYL POLYSILSESQUIOXANE appears in the CosIng inventory

The CosIng inventory lists ISOBUTYL 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.

ISOBUTYL 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

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

NAIL CONDITIONING

CAS 221326-46-1 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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Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for ISOBUTYL POLYSILSESQUIOXANE

This page reproduces the CosIng inventory entry for ISOBUTYL 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 ISOBUTYL 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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