Prduct Name：P-Toluenesulfonic acid
CAS：104-15-4
Molecular weight:172.2
|
item |
Specification |
Specification |
|
Appearance |
White crystal |
White crystal |
|
Content |
≥93-95% |
≥99% |
|
Free Acid (%) |
≤2.0% |
≤0.5% |
|
Fe Assay(ppm) |
≤70 |
≤10 |
|
Moisture(%) |
≤3 |
≤1 |
Product application：P-Toluenesulfonic acid is widely used in the synthesis of pharmaceuticals, pesticides, stabilizers for polymerization reactions, catalysts for organic synthesis (esters, etc.), intermediates for coatings, and resin curing agents. It is a commonly used acid catalyst for organic synthesis. Using it to neutralize with sodium hydroxide to obtain sodium p-toluenesulfonate, and then reacting with phosphorus pentachloride to obtain p-toluenesulfonyl chloride. The latter is used in nucleophilic substitution reactions and also as a protective group for alcohol hydroxyl groups. Other uses of p-toluenesulfonic acid include catalyzing dihydrofuran protection groups on alcohols, carboxylic acid esterification, transesterification reactions, and the formation of acetals from aldehydes.
Packaging, storage and transportation: 25KG/Bag