1,3-Propanedione, 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)- (CAS 70356-09-01) — Sweet Middle Note Fragrance Ingredient
1,3-Propanedione, 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)-
CAS 70356-09-01
What Is 1,3-Propanedione, 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)-?
This synthetic fragrance ingredient is a specialized chemical compound primarily used in modern perfumery. It’s found in select niche fragrances where unique olfactory effects are desired. While not commonly encountered by consumers directly, it contributes to complex scent profiles in premium products.
Safety Profile
USE WITH AWARENESSWhat Does 1,3-Propanedione, 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)- Smell Like?
This synthetic molecule offers a distinctive aromatic profile with subtle nuances. Initial impressions suggest a delicate balance between soft powderiness and faint woody undertones. As it evolves, there’s a whisper of almond-like character with a clean, almost soapy dry-down. The scent maintains remarkable tenacity while remaining transparent, making it valuable for modern fragrance architectures.
Chemistry, Properties & Perfumer Guide
The Chemistry
1,3-Propanedione derivatives represent an important class of fragrance ingredients. This particular compound features a central diketone structure flanked by aromatic substituents – a tert-butylphenyl group and a methoxyphenyl moiety. The electron-donating methoxy group influences the compound’s electronic properties and olfactory characteristics. Synthesis typically involves Friedel-Crafts acylation followed by selective oxidation steps.
Physical & Chemical Properties
| Molecular Class | Aromatic diketone |
|---|---|
| Structural Features | Tert-butyl and methoxy substituents |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 3% | Used as subtle modifier |
| Functional Fragrance | 0.1-0.5% | Up to 1% | For sophisticated effects |
Classic Accords
Tip: Use sparingly to add dimensionality without dominating compositions.
Alternatives & Comparisons
Offers similar structural features with more established safety profile and rosy-woody character.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific IFRA restrictions currently apply to this material.
RIFM Assessment
Full safety assessment pending due to limited commercial use history.
Sustainability
As a synthetic material, production can be carefully controlled with minimal environmental impact. The manufacturing process allows for precise quality control and consistent output. Being petroleum-derived, its sustainability depends on the energy sources used in production.
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