Used primarily as an antioxidant in industrial applications, this compound stabilizes materials sensitive to oxidative degradation. It is effective in polymer systems, protecting plastics and elastomers from thermal and oxidative damage during processing and long-term use. Its sulfonic acid group allows for functionalization or salt formation, enhancing solubility in polar matrices or enabling incorporation into water-based formulations. Commonly found in lubricants, adhesives, and coatings, it prevents discoloration, maintains mechanical properties, and extends service life by scavenging free radicals. Also employed in specialty chemicals where strong antioxidant performance and compatibility with acidic environments are required.