Used as a curing agent for high-performance epoxy resins, particularly in aerospace and electrical insulation applications due to its ability to form thermally and chemically resistant polymers. Commonly employed in the production of polyurethanes and polyamides to enhance mechanical strength and durability. Also utilized in the synthesis of specialty dyes and pigments, especially for high-stability colorants in coatings and inks. Its sulfur-containing structure contributes to improved flexibility and adhesion in polymer systems.