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Coumarin

CAS 91-64-5 · 70/100 · High conf.

Also registered as 1 other CAS number

103802-83-1

Coumarin chemical structure

Concern score

70/100High concern based on regulatory listings.
High confidence

Coumarin in plain language

What it is

Also known as Coumarin (prohibited) · 2H-1-Benzopyran-2-one · 1,2-BENZOPYRONE · 2-PROPENOIC acid, 3-(2-HYDROXYPHENYL)-, .delta.-lactone · Cis-o-coumarinic acid lactone · Coumarinic lactone

Show all 31 names

Cumarin · NCI-C07103 · O-hydroxycinnamic acid lactone · Tonka bean camphor · chromen-2-one · 2-Oxo-1,2-benzopyran · 2-Propenoic acid, 3-(2-hydroxyphenyl)-, δ-lactone · 2H-1-Benzopyran, 2-oxo- · 2H-BENZO(B)PYRAN-2-ONE · 2H-Chromen-2-one · 2h-1-benzopyran- 2-on · 5,6-Benzo-2-pyrone · 5,6-Benzo-alpha-pyrone · Benzo-alpha-pyrone · Benzo-α-pyrone · Coumarin--prohibited · Coumarinic anhydride · Coumarin; 2H-1-Benzopyran-2-one · Kumarin · Rattex · coumarine · o-Hydroxycinnamic lactone · Coumarin (constituent of cinnamomum cassia bark) · Coumarin (constituent of cinnamomum verum bark) · Coumarinum

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Colourant
  • Fragrance
  • Flavouring
  • Deodorant
Is it a concern?
High concern: no hazard classifications on record. It is restricted in EU cosmetics.

Why it's flagged

2H-1-Benzopyran-2-one is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — restricted

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 III — restricted
  • EU restricted in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial
  • EUEC

    Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Other conditions: The presence of the substance must be indicated in the list of ingredients referred to in Article 19(1)g when its concentration exceeds: - 0.001% in leave-on products - 0.01% in rinse-off products

    restricted
    View source →
  • EUCosIngActive2 entries
  • EUEFSAEFSA opinion2 entries
    • Coumarin in flavourings and other food ingredients with flavouring properties (EFSA AFC)Source →
    • Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contacts with Food (AFC) on a request from the Commission related to Coumarin (EFSA AFC)Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 3633 composition records across product categories including Specialty occupational products, Laboratory supplies, Personal care. EPA CPDat classifies this chemical for functional uses including Fragrance, Processing aids not otherwise specified, Deodorizer.
    • EPA CPDat observed this chemical in 3633 composition records across product categories including Specialty occupational products, Laboratory supplies, Personal care. EPA CPDat classifies this chemical for functional uses including Fragrance, Processing aids not otherwise specified, Deodorizer.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • 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.

  • EFSA

    European Food Safety Authority

    • Coumarin in flavourings and other food ingredients with flavouring properties (EFSA AFC)

      2008 · EU EFSA listing · Read the source →

    • Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contacts with Food (AFC) on a request from the Commission related to Coumarin (EFSA AFC)

      2004 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for Coumarin yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

8 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2010-10-17

    Open →
  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →
  • EPA Chemical and Products Database

    exposure · updated october 15, 2019

    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.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Coumarin in a product composition. These are source records, not Greenveil catalog products.

Source records

3,633

Named organisations

6

Specialty occupational productsLaboratory suppliesPersonal careCleaning products and household careVehicleConstruction

Typical roles

PerfumingColourantFragranceFlavouringDeodorant
See products using Coumarin →

Catalog

Found in these products

Their ingredient lists include Coumarin; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Coumarin in the catalog.