Macrocystis algae resinoid (CAS 1207666-22-5) — Green Middle to base Note Fragrance Ingredient
Macrocystis algae resinoid
CAS 1207666-22-5
What Is Macrocystis algae resinoid?
Macrocystis algae resinoid is a rare fragrance ingredient derived from giant kelp forests. It’s primarily encountered in niche marine-inspired perfumes and coastal-themed home fragrances. This ingredient matters because it captures the essence of ocean depths – a complex interplay of salty, mineral, and slightly vegetal notes that can’t be replicated with synthetic marine accords alone.
Safety Profile
USE WITH AWARENESSWhat Does Macrocystis algae resinoid Smell Like?
The resinoid opens with a burst of cold oceanic brine – imagine crushed seaweed releasing its iodine-rich sap at low tide. This evolves into a heart of damp driftwood and ambergris-like warmth, with subtle umami undertones reminiscent of oyster liquor. The dry-down reveals a lingering mineralic character, like sun-baked rocks after the tide recedes, with faint echoes of coastal pine in the distance.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as the structural backbone to create an authentic marine accord, blending the algae resinoid with citrus and woody notes to mimic a windswept shoreline.
Provides depth to the aquatic theme, adding a naturalistic seaweed tang that contrasts with the fragrance’s brighter citrus top notes.
Chemistry, Properties & Perfumer Guide
The Chemistry
Macrocystis resinoid is obtained through solvent extraction of the giant kelp Macrocystis pyrifera. The complex mixture contains halogenated terpenoids, sulfur compounds, and unique marine sterols. Key odor-active components include dimethyl sulfide and various bromophenols that contribute to its characteristic oceanic scent profile. Extraction typically uses hexane or supercritical CO2 to preserve the delicate marine notes.
Physical & Chemical Properties
| Appearance | Viscous dark green liquid |
|---|---|
| Solubility | Soluble in alcohol and oils |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 3% | Used sparingly for marine realism |
| Home Fragrance | 1-3% | Up to 5% | Creates coastal atmosphere |
Classic Accords
Tip: Balance with citrus top notes to prevent the marine character from becoming too fishy.
Alternatives & Comparisons
Synthetic marine note for cleaner aquatic effects when natural seaweed character isn’t desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific restrictions. General guidelines for marine ingredients apply.
RIFM Assessment
Not yet fully assessed by RIFM due to niche usage.
Sustainability
Sustainably harvested from regulated kelp forests in California and Chile. Wild harvesting methods allow regrowth. Some concerns about overharvesting in certain regions have led to increased use of cultivated kelp sources. Carbon footprint is moderate due to solvent recovery systems in extraction processes.
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References
- Marine Natural Products Chemistry DOI:10.1016/j.tet.2019.130307
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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