S,S-Dibenzyl trithiocarbonate is primarily used in polymer chemistry as a chain transfer agent in reversible addition-fragmentation chain-transfer (RAFT) polymerization. It helps control the molecular weight and polydispersity of polymers, leading to more uniform and tailored polymer structures. This chemical is particularly valuable in producing block copolymers, which are essential in advanced materials like drug delivery systems, coatings, and adhesives. Its role in RAFT polymerization also enables the synthesis of polymers with specific functionalities, enhancing their performance in industrial and biomedical applications.