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Cinnamyl Alcohol
Cinnamyl alcohol is an aromatic alcohol with a warm, slightly sweet, and floral cinnamon-like scent. Its aroma is milder and less pungent than cinnamaldehyde, and it is often used to balance the sharpness of spicy notes, providing roundness and extension to formulations.
Type
Floral
The aroma is warm and smooth, presenting a cinnamon-like sweetness and a slight floral note, with a hint of powder and woody undertone. The overall scent is more balanced and pleasant than the corresponding aldehydes.
Acquisition Methods
Natural extraction or chemical synthesis
Cinnamyl alcohol is naturally present in trace amounts in cinnamon bark essential oil. Industrially, cinnamyl alcohol is mainly produced by selective reduction of cinnamaldehyde to obtain more stable and less irritating aroma properties, making it suitable for widespread use in daily chemical and perfume formulations.
Basic Information
| English Name | Cinnamyl Alcohol |
| Common Industry Names | Cinnamyl alcohol, Cinnamyl alcohol |
| Chemical Category | Aromatic unsaturated alcohol |
| Molecular Formula | C₉H₁₀O |
| Molecular Weight | 134.18 g/mol |
| CAS Number | 104-54-1 |
| Appearance | Colorless to pale yellow transparent liquid |
Technical Data
| Boiling Point | 250–260 °C |
| Melting Point | −15 °C |
| Flash Point | 113 °C |
| Density (20 °C) | Approx. 1.04 g/cm³ |
| Solubility | Frequently soluble in ethanol and most organic solvents, Low solubility in water |
| Stability | More stable than cinnamaldehyde, less sensitive to oxidation and alkaline environments, suitable for a wider range of formulation systems. |
Chemical Structure
C₉H₁₀O
Fragrance Characteristics
| Fragrance Characteristics | Warm, slightly sweet cinnamon aroma with soft floral notes and a subtle powdery finish. |
| Fragrance Family | Middle Note |
| Common Pairings | Floral aldehydes, Rose accord, Jasmine accord, Vanillin, Coumarin, Sandalwood |
| Applications | Perfumes (Oriental, Floral Spicy), Fragrances (Skincare, Soaps, Shampoos), Home Furnishings and Fabric Care Products |
Safety and Compliance
| IFRA Guidelines | Cinnamyl Alcohol is an IFRA-restricted ingredient, requiring maximum concentration control in some end products. |
| Stability | Relatively mild, suitable for product systems with high sensitivity to irritants, but formulation stability testing is still recommended. |
| Allergy Risk | Listed by the EU as a potential sensitizing fragrance ingredient requiring labeling, caution should be exercised in products for sensitive skin, and proper labeling is essential. |
Application Highlights
- Milder than cinnamaldehyde, with significantly reduced irritation.
- It acts as an ideal transition between spicy and floral notes.
- It enhances the smoothness and longevity of the formula, subtly but crucially so.
- Suitable for daily chemical and fragrance systems that require a “warm but not irritating” feel.