What are the full physicochemical properties of this Chuanxiong rhizome oil?
Chuanxiong oil meets the classic essential-oil physical profile for phthalide-rich volatile oils.
Physicochemical Specifications
| Parameter | Value | Method / reference |
|---|---|---|
| Relative density (20°C) | 0.920–0.990 | GB/T 14454.2 (ISO 279) |
| Refractive index (20°C) | 1.470–1.510 | GB/T 14457.1 (ISO 280) |
| Optical rotation | -5° to +5° | GB/T 14457.2 (ISO 592) |
| Acid value | ≤5.0 mg KOH/g | ISO 1242 |
| Ester value | ≥30.0 mg KOH/g | ISO 709 |
| Heavy metals (as Pb) | ≤10 mg/kg (tightened to ≤5 on request, per ChP 2025 herb level) | AAS / ICP-MS |
| Solubility | Soluble in ethanol and fixed oils; insoluble in water | — |
| Shelf life | 36 months | ISO 210 / GB/T 26516 |
- Values align with published Chuanxiong oil literature (density 0.95–0.99) and pharmacopoeia essential-oil ranges
- We recommend adopting HPLC fingerprinting as an in-house batch-consistency control in addition to these classics
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