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  • beauty
  • industrial

1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione

CAS 9051-89-2

Concern score

Not assessed — no hazard data yet.

1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione in plain language

What it is

On cosmetic ingredient lists it appears as “Polylactic acid”.

Also known as Polylactic acid · D(+)-Lactide-L(-)-lactide-meso-lactide polymer · D-Lactide-L-lactide-meso-lactide copolymer · Pla · Polylactide resin · Synthetic organic polymer

What it does

Used in cosmetics as an abrasive. Polymer of lactic acid.

  • 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. 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActivePolymer of lactic acid
  • USEPAcommercial use observedEPA CPDat observed this chemical in 5 composition records across product categories including Construction and building materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Abrasive, Binder, biodegradable facing fiber.
    • EPA CPDat observed this chemical in 5 composition records across product categories including Construction and building materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Abrasive, Binder, biodegradable facing fiber.Source →

Expert safety opinions

No expert opinion on file for 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione. 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 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione 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 june 8, 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 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione in a product composition. These are source records, not Greenveil catalog products.

Source records

5

Named organisations

4

Construction and building materialsHome maintenance

Typical roles

Abrasive
See products using 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione →

Catalog

Found in these products

Their ingredient lists include 1,​4-​Dioxane-​2,​5-​dione, 3,​6-​dimethyl-​, (3R,​6R)​-​, polymer with rel-​(3R,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione and (3S,​6S)​-​3,​6-​dimethyl-​1,​4-​dioxane-​2,​5-​dione; each product's own rating depends on its whole formula, so it is shown on the product page, not here.