What does this geranium oil look like — appearance, color, and consistency at room temperature?
This geranium oil is a clear to pale yellow to greenish mobile liquid at room temperature — limpid, free-flowing and free of suspended matter. The greenish tint is characteristic of genuine rose-geranium distillate.
Appearance & Color
| Property | Value |
|---|---|
| Appearance | Clear, mobile liquid, no turbidity or sediment |
| Color | Pale yellow to light greenish yellow (deepens slowly with age per QB/T 3764-1999) |
| Viscosity | Thin and free-flowing — a true volatile essential oil |
| Optical rotation (20°C) | -13° to -7° (FCC 12 range; QB/T 3764 and ISO 4731 China type: -14° to -7°) |
| Clarity in 70% ethanol | 1 mL + 3 mL 70% ethanol gives a clear solution (slight opalescence allowed) |
- Darkening over time is normal and explicitly noted in QB/T 3764-1999; store protected from light and air
- A deep amber or murky appearance usually indicates oxidation, contamination or old stock — we reject such lots
- The product window (density 0.886-0.898, RI 1.464-1.472) matches FCC 12 exactly and sits inside the ISO 4731 China-type range
- Freezing is not expected at normal storage; if cloudiness appears, warm gently to 30-40°C and shake
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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.
