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Moumoujus

ALLYL HEPTINE CARBONATE.

Questionable CAS 73157-43-4 / PERFUMING

A synthetic fragrance ingredient, Allyl Heptine Carbonate is a 2-alkynoic acid ester used to impart scent in personal care products. Its use is strictly regulated due to skin sensitization potential.

Summary

perfuming

Science

Mechanism of Action

This ingredient primarily functions as a perfuming agent. It may undergo hydrolysis on the skin, potentially releasing irritant allyl alcohol, which contributes to delayed skin irritation.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Clinical human testing demonstrated an absence of sensitizing reactions at 0.002% concentration.
  2. 02 The presence of free allyl alcohol at 0.1% or greater causes delayed-type skin irritation.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Stable under standard storage, but susceptible to hydrolysis in the presence of water or extreme pH, releasing irritant allyl alcohol. Must contain <0.1% free allyl alcohol as a purity specification.

Conflicts

  • Methyl heptine carbonate
  • Other 2-alkynoic acid esters
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.002%
Sensitization risk Moderate

Strictly regulated by IFRA and the EU due to its potential for skin sensitization. Finished products must not exceed 0.002% and must contain less than 0.1% free allyl alcohol impurity.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

While permissible at very low concentrations for fragrance, its lack of direct skin benefits and potential for irritation make it a questionable ingredient for precision skincare formulations.

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