Skip to content

GREENVEIL

  • beauty

Methacrylic acid methyl ester-styrene polymer

CAS 25034-86-0

Also registered as 22 other CAS numbers

39475-60-0 · 52441-53-9 · 57829-14-8 · 60953-07-3 · 65802-94-0 · 72146-29-3 · 85897-60-5 · 94948-17-1 · 98225-43-5 · 100754-18-5 · 103452-69-3 · 114730-84-6 · 137262-25-0 · 154213-85-1 · 297741-56-1 · 386703-85-1 · 496765-42-5 · 820993-18-8 · 1005734-80-4 · 1173932-19-8 · 1195968-04-7 · 2177240-50-3

Concern score

Not assessed — no hazard data yet.

Methacrylic acid methyl ester-styrene polymer in plain language

What it is

Also known as Acryester M-styrene copolymer · Benzene, ethenyl-, polymer with methyl 2-methyl-2-propenoate · Methacrylic acid methyl ester, polymer with styrene · Methyl methacrylate-styrene comb copolymer · Methyl methacrylate-styrene polymer · Styrene-methyl methacrylate copolymer

Show all 13 names

Styrene, polymer with methyl methacrylate · methacrylate-styrene copolymer · methyl methacrylate-styrene copolymer (carrier) · methyl-methacrylate-styrene copolymer · styrene/acrylate polymer · styrene/acrylates copolmer · styrene/acrylates copolymer

What it does

Used in consumer products as a thickener and an opacifier.

  • Thickener
  • Opacifier
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Methacrylic acid methyl ester-styrene polymer appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • USEPAcommercial use observedEPA CPDat observed this chemical in 14 composition records across product categories including Batteries, Personal care. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Opacifer.
    • EPA CPDat observed this chemical in 14 composition records across product categories including Batteries, Personal care. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Opacifer.Source →

Expert safety opinions

No expert opinion on file for Methacrylic acid methyl ester-styrene polymer. 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 Methacrylic acid methyl ester-styrene polymer yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

2 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated october 24, 2019

    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 Methacrylic acid methyl ester-styrene polymer in a product composition. These are source records, not Greenveil catalog products.

Source records

14

Named organisations

3

BatteriesPersonal care

Typical roles

ThickenerOpacifier
See products using Methacrylic acid methyl ester-styrene polymer →

Catalog

Found in these products

Their ingredient lists include Methacrylic acid methyl ester-styrene polymer; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 547 →Find products without it →