Methyl p-toluenesulfonate NEW

Appearance and properties: crystal solid

Density: 1.234 g/mL at 25 °C(lit.)

Boiling point: 144-145 °C5 mm Hg(lit.)

Melting point: 25-28 °C(lit.)

Flash point: >230 °F

Refractive index: n20/D 1.5172(lit.)

Water solubility: Insoluble

Storage condition: 2-8ºC

Vapor density: 6.45 (vs air)

Vapor pressure: 1 mm Hg (20 °C)

Production method

It is obtained by the reaction of p-toluenesulfonyl chloride with methanol. Mix p-toluenesulfonyl chloride and methanol, slowly add 25% sodium hydroxide solution, control the temperature below 25℃, when the pH is 9, stop adding alkali, continue to stir for 2 hours, and leave overnight. The lower reactant is taken, and the upper layer is extracted with benzene. After recovering benzene, the extraction solution is combined with the lower layer, washed with water and 5% potassium carbonate solution in turn, and the finished product is obtained by vacuum distillation after drying.

Use

Used as an intermediate in organic synthesis.