Hierochloe alpina absolute (CAS 92128-62-6) — Green Heart Note Fragrance Ingredient
Hierochloe alpina absolute
CAS 92128-62-6
What Is Hierochloe alpina absolute?
Hierochloe alpina absolute is a rare natural extract from alpine sweetgrass, primarily encountered in niche perfumery and aromatherapy products. Its unique scent profile makes it valuable for creating atmospheric fragrances that evoke mountain meadows. This ingredient matters because it offers perfumers an authentic ‘alpine accord’ that synthetic molecules struggle to replicate, capturing the crisp freshness of high-altitude flora.
Safety Profile
GENERALLY SAFEWhat Does Hierochloe alpina absolute Smell Like?
Imagine dew-laden grass at sunrise with a honeyed hay undertone – Hierochloe alpina absolute opens with a crisp green top note reminiscent of crushed alpine herbs. As it develops, a delicate coumarin-like sweetness emerges, like sun-warmed grass with whispers of vanilla. The drydown reveals subtle earthy tones, creating an effect akin to walking through a high-altitude meadow where cool air carries floral nuances.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used at 2% to create the signature ‘alpine breeze’ accord, blending with juniper and rockrose to simulate high-altitude freshness.
Provides the authentic grassy heart note in this solifloral composition, complementing wild chamomile absolute.
Chemistry, Properties & Perfumer Guide
The Chemistry
Hierochloe alpina absolute contains complex mixtures of coumarins, phenolic compounds, and sesquiterpenes characteristic of alpine grasses. The extraction process (typically ethanol or supercritical CO2) preserves delicate volatile compounds that contribute to its fresh-cut grass character. Key odorants include hexenyl esters and coumarin derivatives that develop the characteristic sweet hay aroma upon drying.
Physical & Chemical Properties
| Appearance | Viscous greenish liquid |
|---|---|
| Solubility | Soluble in ethanol, partially soluble in oils |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Adds naturalistic green nuances |
| Aromatherapy | 1-3% | Up to 10% | Used for its calming alpine character |
Classic Accords
Tip: Use sparingly in fougère bases to add authentic grassy depth without overwhelming floral notes.
Alternatives & Comparisons
Provides similar sweet hay notes but lacks the fresh green character of the absolute.
Offers grassy-green elements with better stability in citrus-heavy formulations.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA.
RIFM Assessment
No formal RIFM assessment exists for this rarely used absolute.
Sustainability
Wild harvesting of Hierochloe alpina requires careful management to prevent over-collection in fragile alpine ecosystems. Some producers now cultivate specific varieties to reduce environmental impact. CO2 extraction methods offer more sustainable processing than traditional solvent extraction.
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References
- Alpine Flora Database (2021). Hierochloe Species Profiles. Botanical Reference
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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