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2-METHYLBUTYRALDEHYDE

CAS 57456-98-1

Also registered as 1 other CAS number

96-17-3

2-METHYLBUTYRALDEHYDE chemical structure

Concern score

Not assessed — no hazard data yet.

2-METHYLBUTYRALDEHYDE in plain language

What it is

Also known as 2-METHYL butanal · 2-Methylbutanal · (.+-.)-2-Methylbutanal · (.+-.)-2-Methylbutyraldehyde · (RS)-2-Methylbutanal · (±)-2-METHYLBUTYRALDEHYDE

Show all 20 names

.alpha.-methylbutanal · .alpha.-methylbutyraldehyde · 2-Ethylpropanal · 2-Formylbutane · 2-Methyl-1-butanal · 2-Methylbutyraldehyd · 2-Methylbutyric aldehyde · 2-methyl butyraldehyde · Acetaldehyde, methylethyl- · Acetaldehyde, ethylmethyl- · Butyraldehyde, 2-METHYL- · Butanal, 2-methyl- · Methyl ethyl acetaldehyde · Methylethylacetaldehyde

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
  • Flavouring
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. 2-METHYLBUTYRALDEHYDE appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 1 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.
    • EPA CPDat observed this chemical in 1 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.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 2-METHYLBUTYRALDEHYDE. 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 2-METHYLBUTYRALDEHYDE 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 jan 24 1989

    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

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 2-METHYLBUTYRALDEHYDE in a product composition. These are source records, not Greenveil catalog products.

Source records

1

Named organisations

4

Laboratory supplies

Typical roles

PerfumingFragranceFlavouring
See products using 2-METHYLBUTYRALDEHYDE →