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2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed

CAS 250374-66-4

Also registered as 1 other CAS number

160185-24-0

Concern score

Not assessed — no hazard data yet.

2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed in plain language

What it is

On cosmetic ingredient lists it appears as “Methacryloyloxypropyl polysilsesquioxane”.

Also known as Methacryloyloxypropyl polysilsesquioxane

What it does

Used in cosmetics as an abrasive.

  • Abrasive
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. 2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveMethacryloyloxypropyl 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 methacryloxypropyl 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. Methacryloyloxypropyl Polysilsesquioxane is prepared by the hydrolysis and condensation of Methacryloyl Propyltrimethoxysilane
    • Methacryloyloxypropyl 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 methacryloxypropyl 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. Methacryloyloxypropyl Polysilsesquioxane is prepared by the hydrolysis and condensation of Methacryloyl PropyltrimethoxysilaneSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Abrasive.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Abrasive.Source →

Expert safety opinions

No expert opinion on file for 2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for 2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

3 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated 2019-12-20

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed 2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed in a product composition. These are source records, not Greenveil catalog products.

Named organisations

1

Typical roles

Abrasive
See products using 2-Propenoic acid, 2-methyl-, 3-(trimethoxysilyl)propyl ester, hydrolyzed →