Hyraceum
Fossilised communal excrement of the rock hyrax (Procavia capensis), collected from cliff-face middens in southern and eastern Africa. Centuries of dehydration and polymerisation turn layered urine and faecal deposits into dark, resinous masses. Tinctured in ethanol, hyraceum yields one of perfumery's most complex natural animalics — phenolic, tarry, fermented-sweet — positioned between castoreum and civet, with a mineral dryness neither possesses.
Scent
Origin, Ethics & Substitutes
The Full Story
Extraction & Chemistry
Extraction method
Tincture or absolute. Fossilised deposits are collected from rocky outcrops and sheltered crevices — primarily the Western Cape, Karoo, and Cederberg regions of South Africa, with smaller sources in Namibia, Kenya, and Ethiopia. The raw material is cleaned of soil and debris, then ground to powder. For tincture: macerated in ethanol (typically 95%) at roughly 1:10 ratio for a minimum of 6 months, ideally 12 months or longer, then filtered. Extended maceration yields a rounder, less aggressive profile. For absolute: the tincture is filtered and the ethanol evaporated under vacuum, yielding a concentrated resinoid. No animal contact is involved at any stage. The deposits are geological artefacts, often centuries to millennia old, and the hyrax colonies continue undisturbed.
- Formula
- Complex mixture, phenols, indoles, cyclohexanones, pyrazines
- CAS
- No standardized CAS (complex mineralised natural mixture)
- Botanical
- N/A (animal origin: Procavia capensis)
- Appearance
- Dark brown to black petrified solid (raw); amber-brown liquid (tincture)
- Odour strength
- Strong
- Synonyms
- AFRICA STONE ROCK HYRAX STONE DASSIE PISS KLIPDASSIEPIS
IFRA 51st Amendment (June 2023): restricted. Individual constituents (indole, p-cresol, skatole) carry their own separate IFRA restrictions.
- Note
- Petrified communal urine of the rock hyrax (Procavia capensis). Key odorants: p-cresol, guaiacol, indole, skatole, cyclohexanones, pyrazines. Tincture in ethanol used in perfumery.
In Perfumery
Base-note fixative and animalic modifier. Hyraceum anchors compositions on the animalic-leather-amber axis. At trace doses it naturalises — lending lived-in warmth and bodily presence to otherwise clean or synthetic frameworks. Transparent florals gain gravity. Pale musks acquire depth without turning dark. At higher concentrations, it dominates: feral, phenolic, unmistakable. It pairs structurally with labdanum, dark resins, and castoreum accords. Synthetic molecules that approximate isolated qualities of its profile include indole, p-cresol, paracresyl acetate, and skatole — though none reproduce the full compositional complexity of the tincture. IFRA 51st Amendment (June 2023): restricted. Individual constituents (indole, p-cresol) carry their own separate IFRA limits.