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Angelica Lactone α
Angelica Lactone α is a lactone aroma compound with warm, creamy, slightly caramel and root notes, often used to enhance the naturalness, thickness, and realism of a fragrance. In formulations, it plays more of a “texture shaper” role than a primary fragrance source.
Type
Woody
The aroma is soft and understated, presenting a subtle creamy, caramel sweetness and rooty notes, with a hint of earthiness and powderiness. It effectively reduces the chemical feel of the formula, making the overall scent closer to the natural ingredients.
Acquisition Methods
Natural extraction or chemical synthesis
Angelica Lactone α can be found in trace amounts in natural Angelica sinensis root, but in industrial applications it is mainly produced through the lactone reaction of unsaturated carboxylic acid derivatives to ensure purity, stability and supply consistency.
Basic Information
| English Name | Angelica Lactone α |
| Common Industry Name | α-Angelica Lactone |
| Chemical Category | Lactone Compounds |
| Molecular Formula | C₅H₆O₂ |
| Molecular Weight | 98.10 g/mol |
| CAS Number | 591-12-8 |
| Appearance | Colorless to pale yellow liquid |
Technical Data
| Boiling point | 195–200 °C |
| Melting point | approx. −15 °C |
| Flash point | 68 °C |
| Density (20 °C) | approx. 1.10 g/cm³ |
| Solubility | Easily soluble in ethanol, compatible with most essential oil systems, insoluble in water |
| Stability | Relatively stable in neutral systems, sensitive to strongly alkaline environments; long-term storage at high temperatures may cause aroma changes. |
Chemical Structure
C₅H₆O₂
Fragrance Characteristics
| Fragrance Characteristics | Creamy, caramel-like, slightly sweet, with hints of root vegetables and a touch of powderiness |
| Fragrance Notes | Middle to Base |
| Common Pairings | Coumarin, Vanillin, Ethyl Vanillin, Angelica Root accord, Musk accords, Tobacco accords |
| Applications | Perfumes (Oriental, Tobacco, Natural), Daily Chemical Fragrances (Baby Care, Skin Care, Fabric Care), High-End Home Furnishings |
Safety and Compliance
| IFRA Guidelines | Angelica Lactone α is an ingredient permitted for use by IFRA and is currently not listed as a high-risk, restricted fragrance. |
| Stability | Industrial applications are mature, but it is recommended to avoid prolonged exposure to strong alkalis and high temperatures. |
| Allergy Risk | The risk of allergy is low, and it is generally not on the EU’s list of high-risk sensitizing fragrances requiring mandatory labeling. |
Application Highlights
- Significantly reduces the “chemical” feel of the formula
- Enhances milkiness, naturalness, and authenticity
- Key in tobacco, oriental, and natural flavor profiles
- A typical “small amount, but decisive quality” advanced modifier molecule.
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