Oils, geranium, acetylated (CAS 68916-40-5) — Floral Heart Note Fragrance Ingredient
Oils, geranium, acetylated
CAS 68916-40-5
What Is Oils, geranium, acetylated?
Acetylated geranium oil is a modified version of natural geranium oil, used in perfumes and scented products for its enhanced floral-rosy character. It’s found in premium fragrances and luxury skincare. This ingredient matters because it bridges natural and synthetic perfumery, offering stability while retaining botanical complexity.
Safety Profile
GENERALLY SAFEWhat Does Oils, geranium, acetylated Smell Like?
A radiant floral heart with the lush, green density of crushed geranium leaves. Opens with a honeyed rose top note that evolves into a lemony-herbal freshness. The acetylated version adds a smooth, slightly fruity sweetness reminiscent of peach skin. Dry-down reveals a clean muskiness with faint peppery undertones.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Uses acetylated geranium oil for its amplified minty-rosy facets, creating a modern fougère structure with exceptional diffusion.
Employed here to reinforce the citrus-floral accord with a velvety green depth that lasts beyond the top notes.
Chemistry, Properties & Perfumer Guide
The Chemistry
Acetylated geranium oil is produced by esterifying natural geranium oil (Pelargonium graveolens) with acetic anhydride. This process increases the proportion of geranyl acetate while reducing free alcohols like citronellol. The result is a more stable material with higher solubility in alcohol bases. Key components include citronellyl acetate (25-40%) and geranyl acetate (15-30%).
Physical & Chemical Properties
| Appearance | Pale yellow to amber liquid |
|---|---|
| Solubility | Soluble in alcohol and oils, insoluble in water |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 2-5% | Up to 10% | Adds rosy depth to floral compositions |
| Personal Care | 0.5-2% | Up to 3% | Used in premium soaps and lotions |
Classic Accords
Tip: Blends exceptionally well with citrus oils to brighten floral compositions.
Alternatives & Comparisons
The natural precursor with more herbaceous character but less stability in formulations.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted by IFRA. Contains potential allergens citronellol and geraniol (declaration required above 0.001% in leave-on products).
EU Allergen Declaration
Contains citronellol (CAS 106-22-9) and geraniol (CAS 106-24-1) which require declaration in EU cosmetics.
RIFM Assessment
RIFM safety assessment confirms safe use at current industry levels.
Sustainability
Sourced from cultivated Pelargonium plants, primarily in Egypt and China. The acetylation process reduces waste by stabilizing volatile components. Synthetic alternatives exist but lack the full spectrum of natural derivatives.
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References
- Burdock, G.A. (2010). Fenaroli’s Handbook of Flavor Ingredients. CRC Press. DOI 10.1201/9781439847503
- IFRA Standards (2023). Restricted Materials List. IFRA Standards
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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