# 2-Octynoic acid, 2-propen-1-yl ester

URL: https://app.greenveil.ai/ingredients/ingredient_cas_73157_43_4
Categories: beauty, industrial
Functions: Fragrance
Identifier: 73157-43-4

> 2-Octynoic acid, 2-propen-1-yl ester is used as fragrance. Greenveil chemical-concern score: 70/100 — High concern based on regulatory listings.. Assessed from 3 sources.

## Safety assessment

- Chemical concern score: 70/100 — High concern based on regulatory listings.
- Confidence: 4
- Rationale: Allyl heptine carbonate (allyl oct-2-ynoate) is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

## Regulatory status

- EU: restricted — Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Maximum concentration: 0.002% Other conditions: This material shall not be used in combination with any other 2- alkynoic acid ester (e.g. methyl heptine carbonate)
- US: commercial use observed — EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.

_Assessed by Greenveil._