Piperonyl acetate (CAS 326-61-4) — Floral Middle Note Fragrance Ingredient
Piperonyl acetate
CAS 326-61-4
What Is Piperonyl acetate?
Piperonyl acetate is a synthetic fragrance ingredient with a sweet, floral, and slightly spicy aroma. It’s commonly found in perfumes, soaps, and air fresheners. This versatile compound adds warmth and depth to fragrance compositions, often blending well with other floral and woody notes.
Safety Profile
GENERALLY SAFEWhat Does Piperonyl acetate Smell Like?
Piperonyl acetate unfolds with an initial burst of sweet, floral notes reminiscent of heliotrope and vanilla, with a subtle spicy undertone. As it evolves, the heart reveals a warm, powdery character that blends seamlessly into the base, where it leaves a soft, slightly woody trail. The dry-down is persistent yet gentle, making it excellent for creating long-lasting floral accords without overwhelming the composition.
Chemistry, Properties & Perfumer Guide
The Chemistry
Piperonyl acetate is an ester derived from piperonyl alcohol and acetic acid. It belongs to the class of aromatic esters, known for their sweet and floral olfactory properties. The compound is typically synthesized through esterification reactions, where piperonyl alcohol reacts with acetic anhydride or acetyl chloride in the presence of a catalyst. Its molecular structure features a benzodioxole ring, which contributes to its distinctive aroma profile.
Physical & Chemical Properties
| Boiling Point | Not available |
|---|---|
| Density | Not available |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Adds floral warmth |
| Soap | 0.5-3% | Up to 5% | Stable in alkaline conditions |
| Detergents | 0.1-1% | Up to 2% | Provides lasting freshness |
Classic Accords
Tip: Use in moderation to avoid overpowering other floral notes in the composition.
Alternatives & Comparisons
Offers similar sweet floral character but with more pronounced powdery notes.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions currently apply to piperonyl acetate.
RIFM Assessment
RIFM has evaluated piperonyl acetate and found it safe for use in current fragrance applications.
Sustainability
As a synthetic material, piperonyl acetate production doesn’t rely on natural resources. Modern manufacturing processes aim to minimize environmental impact through efficient synthesis routes and waste reduction. Being petroleum-derived, its sustainability depends on the broader petrochemical industry’s environmental practices.
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