What is the shelf life and how should this peppermint oil be stored?
The shelf life of TPS-RO-006 peppermint oil is 36 months (3 years) from the production date when stored correctly. Peppermint oil is more volatile and more oxidation-prone than sesquiterpene-rich oils, so disciplined storage matters more than for oils like patchouli.
Storage Conditions
| Parameter | Recommendation |
|---|---|
| Container | Tightly sealed aluminium or amber glass container (original packing) |
| Temperature | 5-25°C, cool and stable |
| Light | Protected from direct sunlight and strong light |
| Moisture | Keep dry; seal immediately after each use |
| Headspace | Minimise air exposure; nitrogen blanket for bulk drums |
| Flame | Keep away from ignition sources (flammable, flash ~68°C) |
Shelf Life Facts
- 36 months from production date in unopened original packing
- If chilled below about 10°C, menthol crystals may form — warm gently to 25-30°C and mix; quality is unaffected
- Oxidation indicators: darkening colour, loss of the sharp fresh top, growing menthone/rosy off-notes, rising acid value
- The oil is water-free and water-insoluble, so microbial spoilage is not a practical risk
Best Practice
- Store bulk drums upright in a cool, ventilated, fire-safe warehouse (Class 3 storage area)
- Use clean, dry dispensing tools; never return unused oil to the container
- Rotate stock first-in-first-out; check the batch date on the COA before use
- Keep away from oxidising agents and open flames at all times
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