Used as a sulfur-containing accelerator in rubber vulcanization, enhancing crosslinking efficiency and improving heat resistance and mechanical properties of rubber products. Particularly effective in sulfur-cured systems where controlled cure speed and reduced reversion are required. Also shows application in specialty polymer synthesis as a modifying agent for introducing sulfur linkages. Its morpholine groups contribute to good solubility and dispersion in polar elastomers, making it suitable for use in industrial rubber goods like hoses, belts, and seals.