4H-Indeno[4,5-D]-1,3-dioxole, 3a,5,6,7,8,8b-hexahydro-2,2,6,6,7,8,8-heptamethyl- (CAS 823178-41-2) — Musky Base Note Fragrance Ingredient
4H-Indeno[4,5-D]-1,3-dioxole, 3a,5,6,7,8,8b-hexahydro-2,2,6,6,7,8,8-heptamethyl-
CAS 823178-41-2
What Is 4H-Indeno[4,5-D]-1,3-dioxole, 3a,5,6,7,8,8b-hexahydro-2,2,6,6,7,8,8-heptamethyl-?
This synthetic musk compound is a modern fragrance ingredient used in laundry detergents, fabric softeners, and some personal care products. It provides long-lasting freshness to scented products. As a musk alternative, it offers stability and cost-effectiveness while meeting regulatory requirements for traditional musk ingredients.
Safety Profile
USE WITH AWARENESSWhat Does 4H-Indeno[4,5-D]-1,3-dioxole, 3a,5,6,7,8,8b-hexahydro-2,2,6,6,7,8,8-heptamethyl- Smell Like?
This synthetic musk presents a clean, powdery character with subtle floral undertones. The scent evolves from an initial crispness to a warm, skin-like dry down that lingers for hours. It blends invisibly with other notes while providing depth and persistence to fragrance compositions.
Chemistry, Properties & Perfumer Guide
The Chemistry
This polycyclic musk belongs to the indane class of synthetic musks, structurally designed to mimic natural musk compounds while avoiding nitro-musk toxicity. The molecule features a rigid indane core with multiple methyl groups that influence its odor profile and stability. Modern synthesis routes typically involve catalytic cyclization and methylation steps to achieve the final structure.
Physical & Chemical Properties
| Boiling Point | Not available |
|---|---|
| Density | Not available |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Laundry Care | 0.1-0.5% | Up to 1% | Provides lasting freshness |
| Personal Care | 0.05-0.2% | Up to 0.5% | Used as musk base note |
Classic Accords
Tip: Use in combination with other musks to create depth without overpowering.
Alternatives & Comparisons
More powerful musk with similar stability profile, often used when higher intensity is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No current IFRA restrictions. Approved under Amendment 49.
RIFM Assessment
Under ongoing safety assessment by RIFM. Preliminary data shows acceptable toxicological profile.
Sustainability
As a synthetic ingredient, this musk avoids animal-derived sourcing concerns but raises questions about environmental persistence. Manufacturers are developing more biodegradable versions while maintaining performance characteristics. Current production methods have relatively low carbon footprint compared to natural musk alternatives.
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