What are the physicochemical properties of this cinnamon bark oil?
The oil is a clear to pale yellow to dark yellow mobile liquid with a powerful cinnamic aroma. Key physicochemical parameters are listed below and verified on every batch.
Physicochemical Properties
| Parameter | Specification | Test note |
|---|---|---|
| Appearance | Clear, pale yellow to dark yellow-brown mobile liquid | Visual |
| Relative density (20°C) | 1.010-1.030 (product window) | Oscillating density meter; GB/ChP reference 1.052-1.070 (20/20°C) |
| Refractive index (20°C) | 1.572-1.585 (product window) | Refractometer; GB/ChP reference 1.600-1.614 |
| Optical rotation | -2° to +1° | Polarimeter (FCC 12: -2° to 0°) |
| Acid value | ≤15.0 | Titration per GB/T 11425-2008 |
| Carbonyl content | ≥80% (as cinnamaldehyde) | Titration per GB/T 14454.13-2008 |
| trans-Cinnamaldehyde | ≥74% (GC) | GC-FID per GB/T 11538-2006 |
| Solubility | 1 vol + 3 vol 70% ethanol, clear | Miscibility test |
- Note: the product's density/refractive index window is set for the new-process high-aldehyde oil; batches are tightened to GB/T 11425-2008 (1.052-1.070 / 1.6000-1.6140) or ChP 2025 (1.055-1.070 / 1.602-1.614) ranges when required for food or pharmaceutical use
- Soluble in ethanol and fixed oils; insoluble in water and glycerin
- Full COA for each batch lists density, RI, rotation, acid value, carbonyl content and GC-MS composition
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