Commercially available from multiple global suppliers. Originally developed in Switzerland (patent EP 116 277, 1983). Precursor alpha-campholenaldehyde sourced from turpentine-producing regions (China, Brazil, Indonesia, Portugal).
Pyramid
Base
Dry, aromatic sandalwood with a fennel-liquorice twist and a musky, lactonic finish. Drier than Sandalore, less creamy than Javanol — the most potent of the synthetic sandalwood molecules.
Aromatic-sandalwood on first contact — sweet, woody, with distinct notes of dried fennel and liquorice that set it apart from other synthetic santalols. Drier and more musky than Sandalore, which tends toward a milky, velvety softness. Less creamy and less rosy than Javanol. As Ebanol develops, a lactonic quality emerges — faintly nutty, like toasted sesame — alongside a persistent musky warmth that clings to skin. The effect is dense, close-wearing, and tenacious.
Evolution over time
Immediately
Immediately
Rich, oily sandalwood hit with a musky-leathery undertow. Dense and insistent — noticeably louder than natural sandalwood oil.
After a few hours
After a few hours
The leathery facet recedes. What remains is a smooth, warm woodiness with a faint fruity inflection, clinging close to skin.
After a few days
After a few days
A dry, almost mineral sandalwood ghost. Tenacious but quiet — detectable on fabric for days, reduced to a thin woody-musky trace on skin.
The Full Story
Ebanol smells like sandalwood left in a spice drawer. The initial hit is aromatic — dried fennel, liquorice root, a trace of immortelle — before settling into the familiar creamy-woody territory of natural Mysore sandalwood. But where Mysore is round and buttery, Ebanol is angular. It has a musky backbone and a subtle lactonic sweetness in the dry-down that makes it feel warmer and more enveloping than the tree it imitates.
Chemically, Ebanol is a mixture of four diastereomeric alcohols derived from alpha-campholenaldehyde, itself a downstream product of alpha-pinene — the terpene that gives turpentine its smell. The synthesis follows a three-step route: aldol condensation with 2-butanone, base-catalyzed isomerization using potassium tert-butoxide, and reduction with sodium borohydride. The patent (EP 116 277) was filed in January 1983; industrial production began in 1986.
The molecule's odor threshold sits at approximately 0.21 ng/L in air — roughly four times more potent than natural sandalwood oil. At 100% concentration, its substantivity reaches 400 hours. These numbers explain why Ebanol requires careful dosing: a fraction of a percent can dominate a formula. It is not captive; multiple suppliers produce it globally, though it remains most closely associated with its original Swiss manufacturer.
In modern sandalwood accords, Ebanol typically works alongside Sandalore (for creaminess), Javanol (for brightness and rosy qualities), and Polysantol (for milky body). Each covers a different quality of the sandalwood spectrum. Ebanol's contributi on is the aromatic, musky dimensi on — the part that reads as 'old wood' rather than 'fresh cream.'
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Ebanol's odor threshold is approximately 0.21 nanograms per liter of air — meaning a single gram dispersed evenly could theoretically scent roughly 4.8 billion liters of air above detection level. For comparison, natural East Indian sandalwood oil has an odor threshold about four times higher, making Ebanol a potent woody odorants available to perfumers.
Extraction & Chemistry
Extraction method: Three-step chemical synthesis from alpha-campholenaldehyde (a turpentine derivative). Step 1: aldol condensation of alpha-campholenaldehyde with 2-butanone. Step 2: base-catalyzed isomerization using potassium tert-butoxide in dimethylformamide. Step 3: reduction with sodium borohydride (NaBH4), yielding a mixture of four diastereomeric alcohols. The starting material, alpha-campholenaldehyde, is obtained from alpha-pinene oxide, which itself derives from alpha-pinene — the major terpene in gum turpentine. The full chain: turpentine > alpha-pinene > alpha-pinene oxide > alpha-campholenaldehyde > Ebanol.
Ebanol functions primarily as a base-note fixative and woody anch or. Its extreme potency (odor threshold ~0.21 ng/L) means it operates at low dosages — typically 0.5-3% in a formul a — where it provides volume, projecti on, and a sandalwood skelet on without the cost of natural oil. It is indispensable in woody-amber compositions, where it anchors amber and resinous notes, and in modern fougeres, where it bridges aromatic top notes to a warm dry-down. In skin-scent formul as, its musky quality helps materials register as 'worn' rather than sprayed. Ebanol is also a standard component of synthetic sandalwood bases, where it contributes the aromatic-musky dimensi on alongside Sandalore (creamy), Javanol (bright, rosy), and Polysantol (milky).
