Alpha Damascone
Alpha Damascone (CAS #24720-09-0) is a synthetic ketone renowned for its potent, fruity-floral aroma with metallic and spicy nuances. A key member of the rose ketones family, it is prized in perfumery for its exceptional radiance and ability to impart naturalness and depth to fragrances, despite stringent usage restrictions.
Key Properties
| Parameter | Details |
|---|---|
| Chemical Formula | C₁₃H₂₀O |
| Molecular Weight | 192.3 g/mol |
| Appearance | Colorless to pale yellow liquid (pure form may be crystalline) |
| Odor Profile | Fruity (apple, plum), floral (rose), metallic, spicy |
| Boiling Point | 232–233°C |
| Melting Point | 49–50°C (crystalline form) |
| Solubility | Soluble in alcohol, oils; insoluble in water |
| Purity | ≥90% (sum of isomers)56 |
| Flash Point | >93°C (closed cup)6 |
| IFRA Restriction | 0.043% max in finished products (Category 4)4 |
Olfactive Characteristics
Primary Notes: Crisp apple, ripe plum, rose, metallic sharpness, subtle spice.
Performance: High tenacity (>60 hours on blotter) with exceptional diffusion, even at trace levels46.
Blending: Enhances fruity top notes (e.g., in Aventus-style fragrances) and adds complexity to rose, woody, and amber accords45.
Applications
Perfumery:
Core ingredient in rose, fruity, and floral compositions.
Used in fine fragrances (e.g., Firmenich’s Cetylia® base) to create naturalistic rose nuances4.
Ideal for luxury perfumes, eaux de toilette, and body sprays.
Cosmetics & Personal Care:
Adds sophistication to lotions, deodorants, and shampoos26.
Home & Lifestyle:
Enhances candles, air fresheners, and fabric softeners with a fruity-floral ambiance26.
Flavoring (FEMA 3659):
Used sparingly in food and beverages for fruity undertones5.
Safety & Regulatory Compliance
Hazards: Harmful if swallowed (H302), skin sensitizer (H317), toxic to aquatic life (H411)36.
Handling: Use gloves and ventilation; avoid environmental release36.
Certifications: REACH registered; complies with IFRA, FEMA, and EU/US regulations356.
Storage & Stability
Shelf Life: 18–24 months in cool, dry conditions56.
Packaging: Lacquer-lined steel drums or aluminum cans to prevent degradation5.
Summary
Alpha Damascone is a transformative ingredient in modern perfumery, offering a bold fusion of fruity and floral notes with unmatched radiance. Its versatility extends to cosmetics and home fragrances, though strict adherence to IFRA limits is essential. While preliminary studies suggest antioxidant and insect-repellent properties12, further research is needed to validate these applications.
