Patchouli, ext., acetylated
[CAS# 91770-49-9]

Identification

• Classification: Food additive >> Food spice >> Artificial spice
• Name: Patchouli, ext., acetylated
• Synonyms: Patchouyl acetate; [(3S,8R)-2,2,6,8-tetramethuyl-3-tricyclo[5.3.1.03,8]undecanyl] acetate; (1S,8aR)-4,8a,9,9-tetramethyloctahydro-1,6-methanonaphthalen-1(2H)-yl acetate
• Molecular Formula: C₁₇H₂₈O₂
• Molecular Weight: 264.40
• CAS Registry Number: 91770-49-9
• EC Number: 294-834-4
• SMILES: C1([C@@]3([C@@]2(CCC1CC2C(CC3)C)C)OC(C)=O)(C)C

Properties

• Solubility: soluble (alcohol), insoluble (water)

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Skin irritation	Skin Irrit.	2	H315
Aspiration hazard	Asp. Tox.	1	H304

Discovery and Applications

Patchouli (Pogostemon cablin) is a tropical plant primarily cultivated in Asia, particularly Indonesia. Its essential oil is extracted from the dried leaves through methods such as steam distillation or hydrodistillation. This oil is highly valued in the perfume and cosmetics industries for its distinctive woody and earthy aroma.

Acetylation of patchouli extract involves introducing acetyl groups into the chemical structure of the extract’s constituents. This chemical modification can alter the olfactory properties of the extract, potentially enhancing its fragrance profile. Such modified extracts are utilized in perfumery to provide unique scent characteristics.

The specific processes and applications of acetylated patchouli extract have been documented in various scientific studies and patents. Certain methodologies describe the extraction of patchouli oil using advanced techniques, including supercritical fluid extraction with co-solvents, which influence the final composition. The acetylation process itself modifies key terpenoid components in the extract, impacting both volatility and longevity in fragrance applications.

Acetylated patchouli extract is used in fine fragrances, where it can serve as a fixative to enhance the longevity of scent compositions. It is also incorporated into luxury cosmetics, where its modified profile may provide a smoother and more refined aroma. Additionally, this derivative can be found in scented household products, including candles and diffusers, contributing to complex olfactory formulations.

The study of patchouli and its derivatives continues to advance, with research focusing on optimizing extraction and modification techniques to achieve desired fragrance characteristics. The controlled acetylation of patchouli extract represents an important innovation in fragrance chemistry, ensuring consistency and enhancing its applicability in various perfumery products.

References

none