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2-Methyl-2-​propenoic acid polymer with ethenylbenzene

CAS 9010-92-8 · 100/100 · High conf.

Also registered as 4 other CAS numbers

125626-58-6 · 856646-54-3 · 1430218-91-9 · 2001075-28-9

Concern score

100/100Critical concern based on regulatory listings.
High confidence

2-Methyl-2-​propenoic acid polymer with ethenylbenzene in plain language

What it is

On cosmetic ingredient lists it appears as “Sodium styrene/acrylates copolymer”.

Also known as Sodium styrene/acrylates copolymer · Styrene/acrylates copolymer · 1GP998 · 2-Propenoic Acid, 2-Methyl-, Polymer with Ethenylbenzene · A&M Polystyrene G 9001 · Ax-t 100

Show all 16 names

Almatex PP · Benzene, ethenyl-, polymer with 2-methyl-2-propenoic acid · Methacrylic acid, polymer with styrene · Methacrylic acid, polymers with styrene · Styrene-methacrylic acid copolymer · Styrene, polymer with methacrylic acid · styrene/acrylate copolymer · styrene/acrylic copolymer · styrene/acylates copolymer · sytrene/acrylates copolymer

What it does

Used in consumer products as a chelating agent, a thickener and a film former.

  • Chelating agent
  • Thickener
  • Film former
  • Opacifier
Is it a concern?
Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

Styrene/Acrylates copolymer (nano) [INCI] Sodium Styrene/Acrylates copolymer (nano) [INCI] is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

Restrictions first, then routine listings from published regulatory sources.

  • EU Annex II — prohibited
  • EU prohibited in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial

  • EUEC

    Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

    banned
    View source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 1998 composition records across product categories including Cleaning products and household care, Personal care, Construction. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Opacifer, Dispersing agent.
    • EPA CPDat observed this chemical in 1998 composition records across product categories including Cleaning products and household care, Personal care, Construction. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Opacifer, Dispersing agent.Source →

Expert safety opinions

No expert opinion on file for 2-Methyl-2-​propenoic acid polymer with ethenylbenzene. 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-Methyl-2-​propenoic acid polymer with ethenylbenzene 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

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2024-03-18

    Open →

  • EPA Chemical and Products Database

    exposure · updated september 22, 2022

    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

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed 2-Methyl-2-​propenoic acid polymer with ethenylbenzene in a product composition. These are source records, not Greenveil catalog products.

Source records

1,998

Named organisations

6

Cleaning products and household carePersonal careConstructionBatteriesHome maintenanceCleaning and safety

Typical roles

Chelating agentThickenerFilm formerOpacifier
See products using 2-Methyl-2-​propenoic acid polymer with ethenylbenzene →

Catalog

Found in these products

Their ingredient lists include 2-Methyl-2-​propenoic acid polymer with ethenylbenzene; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 571 →Find products without it →