p-Toluenesulfonic acid,CAS#104-15-4,PTSA

P-toluenesulfonic acid is widely used in the synthesis of medicine, pesticides, polymerization stabilizers, catalysts for organic synthesis (esters, etc.), coatings intermediates and resin curing agents. It is a commonly used acid catalyst for organic synthesis. By neutralizing it with sodium hydroxide, sodium p-toluenesulfonate can be prepared, and then reacting with phosphorus pentachloride, p-toluenesulfonyl chloride can be prepared. The latter is used in nucleophilic substitution reactions and as a protective group for alcohol hydroxyl groups. The use of p-toluenesulfonic acid is also to catalyze the dihydrofuran protection group on alcohol, carboxylic acid esterification, transesterification reaction, aldehyde to acetal and so on.

1. Introduction
Appearance White needle-like or powdery crystal with pungent odor
Molecular formula C7H8O3S
CAS,HS Code CAS#104-15-4 HS.29163990
2.Description
Specifications Melting point:106~107℃

Boiling point:116 °C

Density:1.07

Vapour pressure:69.8Pa at 20℃

Refractive index:1.3825-1.3845

Point of flammability:41 °C

Applications P-toluenesulfonic acid is widely used in the synthesis of medicine, pesticides, polymerization stabilizers, catalysts for organic synthesis (esters, etc.), coatings intermediates and resin curing agents. It is a commonly used acid catalyst for organic synthesis. By neutralizing it with sodium hydroxide, sodium p-toluenesulfonate can be prepared, and then reacting with phosphorus pentachloride, p-toluenesulfonyl chloride can be prepared. The latter is used in nucleophilic substitution reactions and as a protective group for alcohol hydroxyl groups. The use of p-toluenesulfonic acid is also to catalyze the dihydrofuran protection group on alcohol, carboxylic acid esterification, transesterification reaction, aldehyde to acetal and so on.
Solubility Soluble in water, alcohol, ether and other polar solvents
Safety Informations
Biological Activity
Purity 99%
Shipping conditions Conventional transport
Using guidance

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