How do I check if my formula contains ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE?

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 9323518/03/2016

ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

2-Propenoic acid, 1,1',1',1'',1'',1''',1''',1''''-(pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1,3,5,7,9,11,13,15-octaylocta-3,1-propanediyl) ester

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

INCI Checker Compare all markets Search similar

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.

Markets and their official sources Search every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 1204591-17-2

CAS 1204591-17-2PubChem CID 102312668

Acrylo POSS Cage Mixture MA 0736

IUPAC name: 3-[3,5,7,9,11,13,15-heptakis(3-prop-2-enoyloxypropyl)-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosan-1-yl]propyl prop-2-enoate

Molecular formula: C48H72O28Si8
Molecular weight: 1321.7 g/mol
Exact mass: 1320.2364239 Da
Topological polar surface area: 321.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 28
Covalent units: 1
Defined stereocentres: 0

Also known as

1,1',1'',1''',1'''',1''''',1'''''',1'''''''-(Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1,3,5,7,9,11,13,15-octaylocta-3,1-propanediyl) octa-2-propenoate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID301370455

Evidence from additional scientific databases

NIH PubChem PUG-View

Exact identifier match102312668

Attributed physical-property, hazard, environmental and use annotations.

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status

Source	Result	Checked
NIH PubChem PUG-View	Exact match	2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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 ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

INCI name

ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

Description

2-Propenoic acid, 1,1',1',1'',1'',1''',1''',1''''-(pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1,3,5,7,9,11,13,15-octaylocta-3,1-propanediyl) ester

Record provenance

Inventory reference: 93235
Imported identity: ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE
Source update: 18/03/2016

European Commission CosIng source notes

Annex records for ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search annex entries

Search the annex database for entries matching ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE or related substances.

Key data

CAS

1204591-17-2

—

Restriction

—

Function

NAIL CONDITIONING: Improving and/or enhancing the cosmetic characteristics of the nail (moisturizing, increasing sheen, reducing brittleness and flaking, etc.).

Official EU ingredient-name evidence

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

#1065 · ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

Ingredients with overlapping formulation functions

ACRYLATES/DIMETHYLAMINOETHYL METHACRYLATE/HEMA COPOLYMERNAIL CONDITIONING

ACRYLATES/HEMA COPOLYMERNAIL CONDITIONING

ACRYLIC ACIDNAIL CONDITIONING

ACRYLIC ACID/METHYLSTYRENE/STYRENE COPOLYMERBINDING, NAIL CONDITIONING

ADIPIC ACID/FUMARIC ACID/TRICYCLODECANE DIMETHANOL COPOLYMERBINDING, NAIL CONDITIONING, VISCOSITY CONTROLLING

ALLIGATOR OILANTI-SEBUM, ANTIMICROBIAL, NAIL CONDITIONING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ALUMINUM TRIS-HYDROXYNITROSOANILINENAIL CONDITIONING

AMP-ISOSTEAROYL HYDROLYZED SILKHAIR CONDITIONING, NAIL CONDITIONING, SKIN CONDITIONING

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 ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE appears in the CosIng inventory

The CosIng inventory lists ACRYLOYLOXYPROPYL 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.

ACRYLOYLOXYPROPYL 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

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

NAIL CONDITIONING

CAS 1204591-17-2 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.

View CAS records

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

Open INCI Checker

Source note for ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

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

View sources View updates

Tools & next steps

Check your formula

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

INCI Checker

Search similar ingredients

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