PTSC is widely used as a reagent in organic synthesis, particularly for the protection of amines. It reacts with amines to form tosylamides, which are stable intermediates in various chemical reactions. This property makes it valuable in peptide synthesis and the preparation of pharmaceuticals.

In the production of dyes and pigments, PTSC acts as a sulfonating agent, helping to introduce sulfonyl groups into organic molecules. This enhances the solubility and stability of the dyes.

It is also employed in the manufacture of polymers and resins, where it serves as a cross-linking agent, improving the mechanical and thermal properties of the final products.

Additionally, PTSC is used in analytical chemistry as a derivatization agent to modify compounds for easier detection and analysis in chromatography and spectroscopy.

In the field of agrochemicals, it is utilized to synthesize active ingredients for pesticides and herbicides, contributing to crop protection and yield improvement.

Overall, PTSC plays a versatile role in various industries due to its reactivity and ability to modify chemical structures effectively.