What are the physicochemical properties of this lemongrass oil?
The published specification of this lemongrass oil covers the two properties that matter most for authenticity: relative density 0.872-0.900 (20°C) and refractive index 1.483-1.489 (20°C). The refractive index range is identical, to three decimal places, to ISO 3217:1974, ISO 4718:2004, FCC 12 and the BolinHerb domestic benchmark — our strongest specification selling point.
Key Specifications
| Parameter | Value | Reference alignment |
|---|---|---|
| Relative density (20°C) | 0.872 - 0.900 | Matches ISO 3217 lower limit (0.872) and DB45 upper limit (0.900); covers ISO 4718 mid-range |
| Refractive index (20°C) | 1.483 - 1.489 | 100% identical to ISO 3217 / ISO 4718 / FCC 12 / BolinHerb |
| Optical rotation (20°C) | -3° to +1° | ISO 3217 / ISO 4718 / DB45 / FCC unified value; authenticity veto check |
| Citral content (carbonyl as citral) | ≥75% FCC/ISO; ≥65% DB45 domestic type | FCC 12 / ISO 3217 / ISO 4718 / DB45 |
| Myrcene content | <20% (GC) | DB45 upper limit |
| Acid value | ≤2.0 mg KOH/g (internal SOP) | BolinHerb premium internal control |
| Solubility in ethanol | 1 vol in 3 vol 70% (V/V) ethanol (ISO 3217 general grade) | ISO 3217 |
| Flash point | ~71°C closed cup (160°F); ≥80°C typical per ISO annex | UN 1760 transport classification |
| Shelf life | 36 months, sealed, cool and dark | - |
- Density + refractive index together eliminate over 90% of common adulteration when both pass
- Food-grade batches are additionally released with heavy metals (Pb ≤2 mg/kg, As ≤1 mg/kg) and microbiological data on request
- Full COA data are provided batch by batch, including GC-MS for citral and myrcene
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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.
