Methyl Salicylate

Methyl salicylate (oil of wintergreen or wintergreen oil) is an organic ester naturally produced by many species of plants, particularly wintergreens. It is also synthetically produced, used as a fragrance, in foods and beverages, and in liniments.

The compound methyl salicylate was first isolated (from the plant Gaultheria procumbens) in 1843 by the French chemist Auguste André Thomas Cahours (1813–1891), who identified it as an ester of salicylic acid and methanol.

Parameter Value

CAS Number

119-36-8 

Chemical formula

C8H8O3

Molar mass

152.15 g·mol−1

Density

1.174 g/cm3

Melting point

−8.6 °C (16.5 °F; 264.5 K)

Boiling point

222 °C (432 °F; 495 K) [1]
decomposes at 340-350 °C

Solubility in water

0.639 g/L (21 °C)
0.697 g/L (30°C)

Solubility

miscible in diethyl ether, ethanol

Solubility in acetone

10.1 g/g (30 °C)

Vapor pressure

1 mmHg (54 °C)

Acidity (pKa)

9.8[3]

Magnetic susceptibility (χ)

-86.30·10−6 cm3/mol

Refractive index (nD)

1.538

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