Official EU label nameGlossary entry 1065

ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence

Markets checked

Markets with evidence

Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:1204591-17-2

Ingredient index records:

ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

Cosmetic functions: NAIL CONDITIONING

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

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1 matched or reported name

ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ACRYLOYLOXYPROPYL POLYSILSESQUIOXANE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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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

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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.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

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 US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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