Chemical Name: Undecanal
Other Name: Hendecanal
Molecular Formula: C₁₁H₂₂O
Molecular Weight: 170.29 g/mol
CAS Number: 112-44-7
Appearance: Colorless to pale yellow liquid
Odor: Waxy, citrusy, fatty, slightly floral
Boiling Point: ~232°C (450°F)
Flash Point: ~107°C (225°F)
Solubility: Slightly soluble in water; soluble in alcohol and most perfume oils
Functional Group: Aldehyde (–CHO)
Perfumery Profile
Scent Profile:
- Clean and soapy
- Waxy and fatty
- Slightly citrusy with a subtle metallic edge
- Fresh and aldehydic
Use in Perfumery:
- Adds a bright, diffusive sparkle to top notes
- Commonly used in aldehydic florals to enhance the perception of cleanliness and freshness
- Balances floral, green, and citrus elements with its long-chain, warm aldehydic effect
- Works well in luxury soaps, detergent-type scents, and high-end perfumery
Fragrance Families:
- Aldehydic
- Floral
- Citrus
- Green
- Soapy/clean
Notable Use:
- A key component in classic aldehydic perfumes like Chanel No. 5 and White Linen by Estée Lauder
- Often blended with Aldehyde C-10 and C-12 for a layered aldehydic effect