It is a widely used vulcanizing agent in wire and cable rubber, and can also be used as a vulcanization accelerator. The pure product has a melting point of 147 ° C to 148 ° C and a specific gravity of 1.29. It is an off-white powder. It is a super-speed accelerator for natural rubber. It can be decomposed to generate free radicals at 100 ° C, so it can be crosslinked by rubber. The use of thiuram as a vulcanizing agent can improve the heat resistance and aging resistance of rubber. The vulcanization curve is flat and difficult to burn. Suitable for natural rubber, styrene-butadiene rubber, nitrile rubber, and all unsaturated rubber containing double bonds. In general heat-resistant rubber, the amount of thiuram is 2 to 3 parts, while in a continuous vulcanized rubber formulation, the amount is 2 to 5 parts. When used as an accelerator, the amount is 0.3 to 0.5 parts.