Used primarily as an intermediate in organic synthesis, this compound plays a key role in the production of pharmaceuticals and agrochemicals. Its chlorosulfonyl group makes it valuable for creating sulfonamide derivatives, which are essential in developing antibacterial and antifungal agents. Additionally, it is utilized in the manufacture of dyes and pigments, contributing to the vibrant colors in textiles and inks. Its reactivity also allows for modifications in polymer chemistry, enhancing material properties for industrial applications.