Tonka (CAS 8024-04-02) — Fragrance Ingredient Profile
Tonka
CAS 8024-04-02
What Is Tonka?
Tonka is a warm, vanilla-like fragrance derived from the seeds of the Dipteryx odorata tree, native to South America. It’s commonly found in gourmand perfumes, candles, and luxury skincare products. This ingredient matters because it adds depth and warmth to fragrances, creating a comforting, slightly sweet aroma that evolves beautifully on skin.
Safety Profile
USE WITH AWARENESSWhat Does Tonka Smell Like?
Tonka unfolds like a luxurious dessert – initial bursts of almond and cherry evolve into a heart of warm vanilla and caramelized sugar. The dry-down reveals a sophisticated tobacco-like richness with hints of freshly cut hay. Unlike pure vanilla, it carries a subtle spicy edge that prevents cloying sweetness, behaving like a cashmere blanket for the senses – soft yet substantial, comforting yet intriguing.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Tonka provides the bridge between tobacco leaf and vanilla, adding warmth and complexity that prevents the vanilla from becoming too gourmand while softening the tobacco’s roughness.
Used here as a sophisticated alternative to vanilla, tonka adds depth to the citrus-floral opening while blending seamlessly with the patchouli base.
Tonka’s sweet facets balance the fragrance’s harsh tar and coffee notes, creating an addictive contrast that defines this iconic masculine gourmand.
Tonka works with honey and amber to create the fragrance’s legendary golden warmth, adding just enough sweetness to counterbalance the dry tobacco and hay notes.
Tonka provides the sensual, skin-like warmth that makes this fragrance so addictive, blending with cardamom and lavender for a modern masculine interpretation.
Chemistry, Properties & Perfumer Guide
The Chemistry
Tonka’s primary aromatic compound is coumarin (3-10% concentration), a benzopyrone derivative that occurs naturally in the seeds. The fragrance also contains dihydrocoumarin, o-coumaric acid, and various phenolic compounds. Traditional extraction involves macerating the seeds in alcohol, though modern perfumery often uses synthetic coumarin for consistency. The natural extract contains hundreds of trace compounds that contribute to its complexity, including vanillin-like phenols and lactones that enhance its sweet, woody character.
Physical & Chemical Properties
| Appearance | Dark brown viscous liquid |
|---|---|
| Solubility | Soluble in alcohol, insoluble in water |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 3.9% | IFRA restricted due to coumarin content |
| Candles | 1-3% | Up to 5% | Higher heat increases projection |
| Soaps | 0.1-0.5% | Up to 1% | Limited by coumarin restrictions |
| Skincare | 0.01-0.1% | Trace amounts | Primarily for fragrance |
Classic Accords
Tip: Use tonka to add warmth without sweetness by pairing with dry woods like cedar or vetiver.
Alternatives & Comparisons
Pure synthetic coumarin provides the core tonka note without natural variability, useful when regulatory compliance requires precise dosing.
Offers similar vanilla-like warmth with added balsamic depth, suitable when coumarin restrictions prohibit tonka use.
Provides the almond-cherry facets of tonka without coumarin content, useful in clean 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 to 3.9% in leave-on products and 0.01% in oral products due to coumarin content (IFRA Amendment 49).
EU Allergen Declaration
None
RIFM Assessment
RIFM has evaluated coumarin (main component) as safe at current IFRA usage levels.
Sustainability
Wild harvesting of tonka beans threatens some populations, though sustainable cultivation exists in Venezuela. Synthetic coumarin offers an eco-friendly alternative with consistent quality and lower land use impact. The natural extract’s complex trace compounds remain irreplaceable for certain applications, driving demand for responsible sourcing programs.
Explore Tonka
Browse essential oils and aroma compounds.
Browse on iHerb →Affiliate disclosure: we may earn a small commission at no extra cost to you.
References
- Bickers et al. (2005). A risk assessment of coumarin in food and cosmetics. Food Chemistry Toxicology. PMID 16112333
- IFRA Standards Library Amendment 49 IFRA Official
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data error
