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Butylphenyl methylpropional

CAS 80-54-6 · 100/100 · High conf.

Also registered as 2 other CAS numbers

39390-70-0 · 75166-25-5

Butylphenyl methylpropional chemical structure

Concern score

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

Butylphenyl methylpropional in plain language

What it is

Also known as 2-(4-tert-butylbenzyl) propionaldehyde · Lilial · (±)-butylphenyl methylpropional · .alpha.-methyl-p-tert-butylhydrocinnamaldehyde · 3-(4-tert-Butylphenyl)-2-methylpropanal · Lilestral

Show all 31 names

Lilestralis · Lily aldehyde · Lysmeral · P-t-butyl-alpha-methylhydrocinnamic aldehyde · P-tert-butyl-.alpha.-methylhydrocinnamic aldehyde · Pt-bucinal · (+/-)-2-METHYL-3-(4-TERT-BUTYLPHENYL)PROPANAL · (+/-)-butylphenyl methylpropional · (±)-2-METHYL-3-(4-TERT-BUTYLPHENYL)PROPANAL · .beta.-lilial · 2-(4-tert-Butylbenzyl)propionaldehyde; BMHCA · 2-methyl-3-(4-tert- butylbenzyl)propionaldehy de · 2-methyl-4-(4- tertbytlypenyl)- butanal · 3-(4-(tert-Butyl)phenyl)-2-methylpropanal · 3-(4-tert-Butylphenyl)-2-methylpropionaldehyde · 3-(4-tert-Butylphenyl)isobutyraldehyde · 4-tert-butyl-alpha-methylhydrocinnamaldehyde · Lilyal · benzenepropanal, 4-(1,1-dimethylethyl)-.alpha.- methyl- · butyphenyl methylpropional (bmhca) · hydrocinnamaldehyde, p-tert-butyl-alpha-methyl- · lillial · p-tert-Butyl-alpha-methyldihydrocinnamic aldehyde · p-tert-Butyl-alpha-methylhydrocinnamaldehyde · Lilial solution

What it does

Used in cosmetics as a fragrance ingredient. Butylphenyl Methylpropional is the aromatic aldehyde.

  • Perfuming
  • Fragrance
  • Preservative
  • Deodorant
Is it a concern?
Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

2-(4-tert-butylbenzyl) propionaldehyde 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

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial

  • EUEC

    Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

    banned
    View source →
  • EUCosIngActive2 entries
    • Cosmetics Regulation annex II / ref 1666.Source →
    • Butylphenyl Methylpropional is the aromatic aldehyde that conforms to the formula: Restriction: II/1666Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 3452 composition records across product categories including Cleaning products and household care, Landscape/yard, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Fragrance, Deodorizer, Preservative.
    • EPA CPDat observed this chemical in 3452 composition records across product categories including Cleaning products and household care, Landscape/yard, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Fragrance, Deodorizer, Preservative.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 Butylphenyl methylpropional. 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 Butylphenyl methylpropional yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2021-12-01

    Open →

  • EPA Chemical and Products Database

    exposure · updated may-20-2015

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

Source records

3,452

Named organisations

6

Cleaning products and household careLandscape/yardConstruction and building materialsPersonal careConstructionHome maintenance

Typical roles

PerfumingFragrancePreservativeDeodorant
See products using Butylphenyl methylpropional →

Catalog

Found in these products

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

See all 776 →Find products without it →

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Butylphenyl methylpropional in the catalog.