Para Toluene Sulfonic Acid (PTSA) CAS No.: 6192-52-5
Para Toluene Sulfonic Acidacid (PTSA or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. It is a white solid that is soluble in water, alcohols, and other polarorganic solvents. The CH3C6H4SO2– group is known as the tosylgroup and is often abbreviated as Ts or Tos. Most often, TsOH refers to the monohydrate, TsOH.H2O.