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Terephthalic acid

CAS 211863-90-0

Also registered as 3 other CAS numbers

211863-92-2 · 2088100-81-4 · 100-21-0

Terephthalic acid chemical structure

Concern score

Not assessed — no hazard data yet.

Terephthalic acid in plain language

What it is

Also known as Ecamsule related compound c · Benzene-1,4-dicarboxylic acid · Ecamsule related compound c rs · P-phthalic acid · 1,4-BENZENEDICARBOXYLIC acid, para-phthalic acid · 1,4-Dicarboxybenzene

Show all 21 names

4-Carboxybenzoic acid · Acide terephtalique · Amoco TA 33 · Kyselina tereftalova · Ta 12 · TA-33MP · Tephthol · Tpa · Wr 16262 · acido tereftalico · hydron;terephthalate · p-Benzenedicarboxylic acid · p-Carboxybenzoic acid · p-Dicarboxybenzene · para-Phthalic acid

What it does

We don't have a plain-language description for Terephthalic acid yet.

Recorded functional uses: Not reported · Diacids · Plasticizer

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. Terephthalic acid appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveTerephthalic Acid is the organic compound that conforms to the formula
    • Terephthalic Acid is the organic compound that conforms to the formulaSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 3 composition records across product categories including Construction and building materials. EPA CPDat classifies this chemical for functional uses including Plasticizer, diacids.
    • EPA CPDat observed this chemical in 3 composition records across product categories including Construction and building materials. EPA CPDat classifies this chemical for functional uses including Plasticizer, diacids.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

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

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated january 12, 2017

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    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 Terephthalic acid in a product composition. These are source records, not Greenveil catalog products.

Source records

3

Named organisations

5

Construction and building materials

Typical roles

Not reportedDiacidsPlasticizer
See products using Terephthalic acid →