Methyl ester of rosin (partially hydrogenated) (CAS 8050-15-5) — Woody Base Note Fragrance Ingredient
Methyl ester of rosin (partially hydrogenated)
CAS 8050-15-5
What Is Methyl ester of rosin (partially hydrogenated)?
Methyl ester of rosin is a synthetic fragrance ingredient derived from pine tree resin. It’s commonly found in industrial fragrances, soaps, and cleaning products where a low-cost woody note is desired. This material provides a subtle pine-like character that blends well with other woody and citrus notes, making it useful for masculine and fresh compositions.
Safety Profile
USE WITH AWARENESSWhat Does Methyl ester of rosin (partially hydrogenated) Smell Like?
The methyl ester of rosin offers a dry, resinous woody character with subtle pine undertones. Its scent profile is reminiscent of aged pine sap – less sharp than fresh pine needles, more like the warm, slightly sweet aroma of sun-baked pine boards. The odor lacks the turpentine-like sharpness of raw rosin, presenting instead a smooth, slightly powdery wood note that works well as a base modifier. In blends, it adds a subtle amber-like quality without being overly sweet.
Chemistry, Properties & Perfumer Guide
The Chemistry
Methyl ester of rosin is produced by esterification of rosin acids (mainly abietic acid derivatives) with methanol, followed by partial hydrogenation. Rosin itself is obtained from pine trees, primarily as a byproduct of paper production. The hydrogenation step reduces color and improves stability while maintaining the desirable woody odor characteristics. The resulting material is a complex mixture of methyl esters of various diterpenoid acids.
Physical & Chemical Properties
| Appearance | Viscous liquid to semi-solid |
|---|---|
| Color | Pale yellow to amber |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Soaps & Detergents | 1-3% | Up to 5% | Provides cost-effective woody note |
| Industrial Fragrances | 2-5% | Up to 10% | Used as woody base modifier |
| Cleaning Products | 0.5-2% | Up to 3% | Adds fresh woody character |
Classic Accords
Tip: Use with citrus top notes to create affordable masculine cologne-type fragrances.
Alternatives & Comparisons
Natural alternative with similar pine character but more complexity and higher cost.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA. Listed as generally recognized as safe when used appropriately.
GHS Classification
RIFM Assessment
RIFM has evaluated related rosin derivatives and found them safe at current usage levels.
Sustainability
As a byproduct of paper production, this material represents efficient use of pine tree resources. The synthetic modification process is relatively low-energy compared to many fragrance ingredients. Being derived from renewable pine sources rather than petrochemicals gives it an environmental advantage over some synthetic woody materials.
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