Tonka Bean Absolute (CAS 8046-22-8) — Balsamic Base Note Fragrance Ingredient
Tonka Bean Absolute
CAS 8046-22-8
What Is Tonka Bean Absolute?
Tonka bean absolute is a luxurious fragrance ingredient derived from the seeds of the Dipteryx odorata tree, native to South America. It’s commonly found in gourmand perfumes, candles, and high-end cosmetics. The ingredient matters because it provides a warm, vanilla-like sweetness with complex spicy-woody undertones, making it a cornerstone of oriental and amber fragrances.
Safety Profile
USE WITH AWARENESS
What Does Tonka Bean Absolute Smell Like?
Tonka bean absolute unfolds like a gourmand symphony – initial bursts of marzipan and caramelized sugar give way to a heart of roasted almonds and cinnamon sticks. The dry-down reveals profound depths: tobacco leaves soaked in vanilla extract, a whisper of freshly cut hay, and the faintest phenolic edge reminiscent of antique leather bound books. Its tenacity allows the sweetness to persist without cloying, evolving over hours into a skin-hugging amber glow.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Tonka bean forms the gourmand core of this cult fragrance, amplified by heliotrope and vanilla to create a dessert-like sophistication without literal foodiness.
Here the bean’s almond facets are highlighted with cherry liqueur accords, showcasing its versatility beyond typical vanilla associations.
Tonka’s tobacco-like qualities harmonize with honeyed pipe tobacco in this bold masculine, demonstrating its chameleonic character.
Tonka bean absolute provides structural depth to the vanilla, preventing excessive sweetness while adding woody-spicy complexity.
Used alongside coffee and dark chocolate accords, tonka bean contributes to the fragrance’s addictive edible-inedible tension.
Chemistry, Properties & Perfumer Guide
The Chemistry
Tonka bean absolute contains approximately 1-3% coumarin (CAS 91-64-5), a benzopyrone derivative responsible for its signature scent. The extraction process typically involves solvent extraction of dried beans followed by purification. Coumarin’s planar structure allows strong π-π interactions with olfactory receptors, explaining its potency. Synthetic coumarin is often blended with natural extracts to standardize fragrance profiles while complying with regulatory limits.
Physical & Chemical Properties
| Appearance | Viscous brown liquid |
|---|---|
| Solubility | Soluble in ethanol, fixed oils |
| Flash Point | >100 °C |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 3% | IFRA restricted |
| Candles | 1-3% | Up to 5% | Heat enhances diffusion |
| Soaps | 0.1-0.5% | Up to 1% | Limited by coumarin content |
| Cosmetics | 0.05-0.2% | Up to 0.5% | Leave-on products |
Classic Accords
+ Tobacco + Leather = Masculine oriental
+ Citrus + Neroli = Modern cologne twist
Tip: Balance coumarin-rich tonka with ionones or musks to prevent excessive powderiness in the dry-down.
Alternatives & Comparisons
Pure synthetic coumarin provides similar scent characteristics without natural variability, allowing precise dosing under IFRA limits.
Offers comparable vanilla-balsamic warmth with lower coumarin content, suitable for products requiring wider safety margins.
Recreates tonka’s almond-like facets while avoiding coumarin restrictions, useful in clean fragrance formulations.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
Restricted under IFRA Standard (Amendment 49) due to coumarin content: maximum 3.8% in fine fragrance, lower limits for other applications.
EU Allergen Declaration
Coumarin must be declared when present above 0.01% in leave-on products (EU Regulation No 1223/2009).
GHS Classification
H315 Skin irritation
RIFM Assessment
RIFM evaluation confirms safe use at current IFRA limits, with coumarin being the critical component for risk assessment.
Sustainability
Wild harvesting of tonka beans in Venezuela and Brazil raises ecological concerns, prompting increased use of synthetic coumarin. Sustainable cultivation projects are emerging, though extraction yields remain low (about 2% absolute from dried beans). Carbon footprint varies significantly by extraction method and origin.
Explore Tonka Bean Absolute
Browse essential oils and aroma compounds.
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Industry & Science Data
References
- IFRA Standards (2023). Amendment 49 – Coumarin. IFRA Official
- Bickers et al. (2005). Coumarin phototoxicity. PMID 15898959
- Sell C. (2019). The Chemistry of Fragrances. DOI 10.1039/9781788016419
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Mar 2026.
