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  • industrial

Crotonaldehyde

CAS 4170-30-3

Concern score

Not assessed — no hazard data yet.

Crotonaldehyde in plain language

What it is

Also known as 1-FORMYLPROPENE · 2-BUTENAL · 2-BUTENALDEHYDE · 95:5 mixture of trans:cis crotonaldehyde isomers · But-2-enal · Crotonal

Show all 11 names

2-butenal (=crotonaldehyde) · But-2-en-1-al · Crotenaldehyde · Crotonic aldehyde · butenal

What it does

Used in consumer products as an antioxidant, a fragrance ingredient and a deodorant.

  • Antioxidant
  • Fragrance
  • Deodorant
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Crotonaldehyde appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • USEPAcommercial use observedEPA CPDat observed this chemical in 4 composition records across product categories including Vehicle. EPA CPDat classifies this chemical for functional uses including Antioxidant, Deodorizer, Fragrance.
    • EPA CPDat observed this chemical in 4 composition records across product categories including Vehicle. EPA CPDat classifies this chemical for functional uses including Antioxidant, Deodorizer, Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as mixture.
    • openFDA substance registry classifies this ingredient as mixture.Source →

Evidence & sources

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

4 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated March 2000

    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 →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

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

Source records

4

Named organisations

5

Vehicle

Typical roles

AntioxidantFragranceDeodorant
See products using Crotonaldehyde →