Used as a crosslinking agent in polymer chemistry, particularly in the production of polyurethanes and epoxy resins. Its dual isothiocyanate groups react readily with hydroxyl, amino, and thiol groups, enabling efficient network formation in coatings, adhesives, and sealants. It is also employed in the synthesis of specialty polymers and functional materials where thermal and mechanical stability are required. Additionally, it finds use in biomedical applications for modifying proteins and creating bioconjugates due to its ability to form stable thiourea linkages.