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Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene

CAS 62258-49-5

Concern score

Not assessed — no hazard data yet.

Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene in plain language

What it is

On cosmetic ingredient lists it appears as “Methylbutene/methylstyrene/piperylene copolymer”.

Also known as Methylbutene/methylstyrene/piperylene copolymer · Benzene, (1-Methylethenyl)-Polymer · Poly(amylene-co-alpha-methylstyrene-co-piperylene) · hydrocarbon resin · plasticizer

What it does

We don't have a plain-language description for Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene yet.

Recorded functional uses: Adhesive resin

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. Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveMethylbutene/Methylstyrene/Piperylene Copolymer is a copolymer of methylbutene, methylstyrene and piperylene monomers; Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene
    • Methylbutene/Methylstyrene/Piperylene Copolymer is a copolymer of methylbutene, methylstyrene and piperylene monomers; Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadieneSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 8 composition records across product categories including Construction and building materials, Home maintenance, Raw materials. EPA CPDat classifies this chemical for functional uses including Processing aids not otherwise specified, adhesive resin.
    • EPA CPDat observed this chemical in 8 composition records across product categories including Construction and building materials, Home maintenance, Raw materials. EPA CPDat classifies this chemical for functional uses including Processing aids not otherwise specified, adhesive resin.Source →

Expert safety opinions

No expert opinion on file for Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene. 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 Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene 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 january 26, 2017

    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 Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene in a product composition. These are source records, not Greenveil catalog products.

Source records

8

Named organisations

6

Construction and building materialsHome maintenanceRaw materials

Typical roles

Adhesive resin
See products using Benzene, (1-methylethenyl)-, polymer with 2-methyl-2-butene and 1,3-pentadiene →