What are the key physicochemical specifications — density, refractive index, acid value, and ester value?
Relative density 0.900–0.960, refractive index 1.465–1.490 (20°C), optical rotation −5° to +5°, acid value ≤5.0 mg KOH/g, ester value ≥30.0 mg KOH/g, with a 36-month shelf life.
Key Specifications
| Parameter | Value |
|---|---|
| Relative density (20°C) | 0.900–0.960 |
| Refractive index (20°C) | 1.465–1.490 |
| Optical rotation | −5° to +5° |
| Acid value | ≤5.0 mg KOH/g |
| Ester value | ≥30.0 mg KOH/g |
| Solubility | 1:3 in 90% ethanol |
| Shelf life | 36 months |
- Density and refractive index align closely with published wild-chrysanthemum oil data (0.900–0.970 / 1.460–1.495), confirming genuine, unadulterated distillate
- Low acid value indicates fresh raw material and careful handling — a key stability indicator for export
- Ester value ≥30 reflects the aroma-bearing ester fraction (myrtenyl/chrysanthemenyl acetates)
Full COA with these parameters is issued per batch and available for your review.
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
