Tetramethylthiourea is primarily used as a vulcanization accelerator in the rubber industry, enhancing the speed and efficiency of the vulcanization process to improve the durability and elasticity of rubber products. It is also employed as a catalyst in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals, where it facilitates specific chemical reactions. Additionally, it serves as a corrosion inhibitor in industrial applications, protecting metal surfaces from degradation in harsh environments. Its ability to act as a stabilizer in certain chemical processes further extends its utility in various manufacturing sectors.