Methyl Salicylate CAS 119-36-8

Introduction to Methyl Salicylate

Methyl Salicylate is an organic ester carrying a phenolic hydroxyl group and methyl ester moiety on a benzene ring. It appears as a clear colorless to pale yellow liquid at room temperature, with a highly characteristic penetrating wintergreen odor. It shows limited water solubility and mixes fully with alcohols, ethers and essential oils.

Industrial production adopts precision esterification processes to deliver high purity and authentic natural-identical aroma. The compound functions as a counterirritant on skin, and serves as a flavoring and fragrance agent across personal care, pharmaceutical and food applications.

Methyl Salicylate Chemical & Physical Properties

Applications of Methyl Salicylate

Topical analgesics and liniments: Formulated into muscle rubs and joint pain liniments, often blended with menthol and camphor. It acts as a counterirritant to produce localized warming sensation that distracts from deep muscle ache, with good dermal penetration and minimal greasy residue.

Oral care flavoring: Incorporated into toothpastes, mouthwashes and chewing gums to deliver sharp wintergreen notes. It masks bitter active pharmaceutical ingredients in medicated lozenges, and flavors beverages and confectionery at low dosage levels.

Fine fragrances and cosmetics: Used to build fern and chypre accords in perfumery. It bridges heavy base notes and volatile top notes, adding sweet herbaceous depth to soaps, lotions and bath oil formulations.

Storage & Safety Precautions for Methyl Salicylate

• Store in tightly sealed containers in a cool, dark warehouse away from direct sunlight. Prolonged UV and air exposure causes oxidative darkening and off-odor development.
• Use stainless steel, glass or PTFE-lined equipment for storage and transfer. The ester may slowly degrade certain plastics and rubber seals with extended contact.
• Handle as a skin sensitizer and severe eye irritant. Wear splash goggles, nitrile gloves and protective aprons during bulk transfer. Avoid inhalation of concentrated vapors in poorly ventilated areas.

Methyl Salicylate FAQ

Q: How does Methyl Salicylate work in topical pain relief?

A: It acts as a counterirritant, producing localized warming to distract from muscle aches. Good lipophilicity supports fast skin penetration without greasy residue.

Q: Why is Methyl Salicylate used in oral care products?

A: It delivers a sharp wintergreen profile that masks bitter active ingredients. Trace amounts also effectively flavor beverages and confectionery.

Q: What causes Methyl Salicylate to darken during storage?

A: UV light and oxygen trigger oxidative degradation and discoloration. Store in sealed containers in cool dark conditions to preserve aroma and clarity.