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4-T-BUTYL BENZALDEHYDE

CAS 939-97-9
68

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

T-Butyl Benzaldehyde is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

4-T-butyl benzaldehyde (CAS 939-97-9) is an aromatic aldehyde used as a fragrance component in cosmetics. It is recognized as a fragrance allergen under EU Cosmetics Regulation (EC) No 1223/2009 Annex III, requiring mandatory label declaration when present above threshold concentrations. This classification places it in the 60-74 band, reflecting both its widespread cosmetic use and the regulatory requirement for consumer transparency.

Skin benefits

  • Fragrance component

Known concerns

  • Fragrance allergen (EU Annex III — declaration required)

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.