P-Toluenesulfonic acid (PTSA CAS 104-15-4, p-CH3C6H4SO3H, also written as TsOH) is a strong organic acid without oxidation, and its acidity is 10 million times that of benzoic acid. It is white acicular or powder crystal, easy to deliquescence, and soluble in water, alcohol and other polar solvents. It can dehydrate and carbonize paper and wood.
Physical and chemical properties
Density: 1.24g/cm3
Melting point: 106-107 ℃
Boiling point: 140 ℃ (20mm Hg)
Flash point: 41 ℃
Refractive index: 1.563
Appearance: white crystal
Application
It is widely used as stabilizer for synthesis of medicine, pesticide, polymerization and catalyst for organic synthesis (esters, etc.). It is used as intermediate of medicine and coating, resin curing agent and electroplating intermediate.
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