What are the physicochemical properties and specifications of this ylang ylang oil?
Each batch is tested against ISO 3063 — the international standard for ylang ylang oil — which defines the physical constants and composition ranges for each grade (Extra, I, II, III and Complete).
Physicochemical Specifications
| Parameter | Specification (20°C) |
|---|---|
| Appearance | Clear, mobile liquid, pale yellow to amber |
| Relative density (d20/20) | 0.910-0.970 |
| Refractive index (nD20) | 1.490-1.520 |
| Optical rotation | -50° to +10° (varies by grade) |
| Ester value | 60-200 (grade-dependent) |
| Solubility | Soluble in ethanol and fixed oils; insoluble in water |
| Flash point | ≈ 80-90°C |
- Density and refractive index are the first-line identity checks against ISO 3063
- Composition (linalool, benzyl benzoate, esters, sesquiterpenes) is verified by GC-MS on every batch
- Higher grades (Extra, I) show higher ester values and lower density; lower grades are denser and heavier
- The oil is insoluble in water, soluble in ethanol (1:1 in 90% ethanol for most grades) and fixed oils
- Flash point around 80-90°C — treat as a combustible liquid, not as volatile as citrus oils
- Full GC-MS fingerprint and physical data are provided on the batch COA
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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.
