Wintergreen specification
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Testing Items |
Standard Requirements |
Testing Result |
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Color and Appearance |
Colorless or pale yellowish liquid |
Colorless liquid |
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Scent |
Peat-reek,sweet and spicy |
Qualified |
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Density (20℃/20℃) |
1.160-1.195 |
1.1808 |
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Optical Rotation (20℃) |
-1°~+1° |
+0.85° |
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Refractive Index (20℃) |
1.5230-1.5430 |
1.5353 |
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Acid Value (KOH)/(mg/g) |
≤1.5 |
0.63 |
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Residue on Evaporation |
≤0.12% |
0.04% |
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Methyl Salicylate Content |
≥80% |
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80.6% |
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Wintergreen details
Methyl salicylate (oil of wintergreen or wintergreen oil) is an organic ester that is naturally produced by many species of plants. Some of the plants which produce it are called wintergreens, hence the common name. This compound is used as a fragrance. It is also found in liniments (rubbing ointments).
Methyl salicylate can be produced by esterifying salicylic acid with methanol. Commercial methyl salicylate is now synthesized, but in the past, it was commonly distilled from the twigs of Betula lenta (sweet birch) and Gaultheria procumbens (eastern teaberry or wintergreen).
Wintergreen Application
