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Allyl heptine carbonate (allyl oct-2-ynoate)

CAS 73157-43-4
38

Safety score · 0–100

Caution

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

About

Allyl heptine carbonate, a highly unsaturated acetylenic fatty acid ester restricted in the EU at 0.002% due to safety concerns including potential carcinogenicity of allyl compounds.

Allyl heptine carbonate (allyl oct-2-ynoate) is an acetylenic fatty acid ester with a double bond (heptine) and allyl group. It carries a PubChem score of 35 reflecting significant concern. It is listed in EU Annex III with a maximum concentration of 0.002% in finished cosmetic products, one of the most restrictive limits for fragrance materials. The combination of an acetylenic bond (high reactivity) with an allyl group (toxicity concern) explains the strict limit. It must be declared as a fragrance allergen.

Known concerns

  • EU Annex III restricted (max 0.002%)
  • High reactivity (acetylenic bond)
  • Allyl-related toxicity
  • Fragrance allergen 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 — always read the physical product label and consult a healthcare professional for personal concerns.