Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
- beauty
- industrial
Urethane
CAS 51-79-6 · 100/100 · High conf.
Also registered as 1 other CAS number
121382-27-2
Concern score
100/100Critical concern driven by cmr.
High confidence
Urethane in plain language
Also known as Ethyl carbamate · Urethan · ethyl ester Carbamic acid · Urethane (Ethyl carbamate) · Leucethane · O-ethylurethane
Show all 25 names
Pracarbamine · Aethylcarbamat · Aethylurethan · Carbaminsaeure-aethylester · Estane 5703 · Ethyl aminoformate · Ethyl urethan · Ethyl urethane · Ethylcarbamate · Ethylurethan · Ethylurethane · Leucothane · Open-cell urethane foam · Pracarbamin · U-Compound · Uretan · Uretan etylowy · Uretano · urethane (ethyl carbamate) (sara iii)
Used in consumer products as a thickener.
- Thickener
- Critical concern: classified for carcinogenic, mutagenic or reproductive toxicity (CMR). It is banned in EU cosmetics.
Why it's flagged
- Cmr
Urethane (Ethyl carbamate) is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
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 II — prohibited
- EU prohibited in cosmetics
- Found in consumer products
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products. CMR: Carcinogenic Cat. 1B()
EUCosIngActiveCosmetics Regulation annex II / ref 671.
- Cosmetics Regulation annex II / ref 671.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 20 composition records across product categories including Construction and building materials, Medical/dental, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Thickening agent.
- EPA CPDat observed this chemical in 20 composition records across product categories including Construction and building materials, Medical/dental, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Thickening agent.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 Urethane. 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 Urethane yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2010-10-21
- Open →
EPA Chemical and Products Database
exposure · updated may 11, 2016
- 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
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Where it has been recorded
How often EPA CPDat has listed Urethane in a product composition. These are source records, not Greenveil catalog products.
Source records
20
Named organisations
6
Construction and building materialsMedical/dentalLaboratory suppliesRaw materialsFurniture and furnishings
Typical roles
Thickener