What are the physicochemical properties of this michelia leaf oil?
This michelia leaf oil (TPS-RO-002) has the classic physicochemical profile of a linalool-rich leaf distillate: a light mobile liquid, slightly lighter than water, with a refractive index near 1.46 and a levorotatory optical rotation. The reference values below follow GB 1886.276-2016, QB/T 2239-2011 and international supplier COAs.
Physicochemical Properties
| Property | Reference value |
|---|---|
| Relative density | 0.860-0.900 (20°C); GB 1886.276: 0.850-0.900 |
| Refractive index | 1.455-1.475 (20°C); GB 1886.276: 1.455-1.480 |
| Optical rotation | −16° to −7° (GB 1886.276); −16° to −11° (QB/T 2239) |
| Solubility | 1 mL in 3 mL of 70% ethanol, clear (GB 1886.276) |
| Acid value | ≤5 (GB); ≤1 (QB/T 2239) |
| Ester value | ≥2 (QB/T 2239) |
| Flash point | ~67-75°C closed cup (drives UN 3082 vs UN 1993 choice) |
| Shelf life | 36 months in sealed, cool, dark storage |
- The density window differs slightly by standard: the customer-facing spec is 0.860-0.900 at 20°C
- Flash point around 67-75°C means most suppliers ship the oil as UN 3082 (Class 9, environmentally hazardous) rather than UN 1993 — your COA states the actual measured flash point
- Full COA lists all measured values batch by batch, including the GC linalool content
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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.
