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2-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE

CAS 55031-88-4

Concern score

Not assessed — no hazard data yet.

2-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE in plain language

What it is

On cosmetic ingredient lists it appears as “Isobutylene/sodium maleate copolymer”.

Also known as Isobutylene/sodium maleate copolymer

What it does

Used in cosmetics as a film former and a thickener.

  • Film forming
  • Viscosity controlling
  • Thickener
  • Film former
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-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActive2-Butenedioic Acid (2Z)-, Disodium salt, Polymer with 2-methyl-1-propene
    • 2-Butenedioic Acid (2Z)-, Disodium salt, Polymer with 2-methyl-1-propeneSource →
  • 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 Film former, Viscosity modifier.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Film former, Viscosity modifier.Source →

Expert safety opinions

No expert opinion on file for 2-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE. 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-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE 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-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE in a product composition. These are source records, not Greenveil catalog products.

Named organisations

1

Typical roles

Film formingViscosity controllingThickenerFilm former
See products using 2-BUTENEDIOIC acid (2Z)-, sodium salt (1:2), polymer with 2-METHYL-1-PROPENE →