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Fragrance

TERT-BUTYL ISOPENTANETHIOATE

CAS 2432-91-9
35

Safety score · 0–100

Caution

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

A sulfur-containing thioester used as a fragrance/flavor note. PubChem flags it as a skin, eye and respiratory irritant — concerning for a leave-on cosmetic.

Function

PERFUMING

Skin benefits

  • Provides flavor/fragrance character
  • Used at extremely low fragrance percentages

Known concerns

  • GHS07 — causes skin and eye irritation
  • Respiratory tract irritant (H335)
  • Thioester sulfur character — odor and reactivity concerns
  • Not a recognized cosmetic ingredient outside fragrance 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.