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4-T-BUTYLBENZOIC ACID

CAS 98-73-7
22

Safety score · 0–100

Caution

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

4-tert-Butylbenzoic acid is classified by EU CLP as a suspected reproductive toxicant (H361f). Not appropriate as a deliberate cosmetic ingredient and considered an undesirable impurity in tertiary-butyl derivative chemistry.

Function

FRAGRANCEPERFUMING

Skin benefits

  • Limited functional use in cosmetics — mostly a process or technical residue

Known concerns

  • EU CLP: H361f — suspected of damaging fertility (reproductive toxicant cat. 2)
  • ECHA REACH SVHC candidate for endocrine/reproductive concerns
  • Skin sensitization signals in some structural relatives
  • Not appropriate for leave-on cosmetic use

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.