Rubber vulcanization accelerator TMTM

Chinese alias: Four methylthiobutanoic dicarbodiimide amide; accelerator TS; tetramethylthiuram sulfide CAS ??? No.: 97-74-5 Molecular formula: C6H12N2S3 MW: 208.35 toxicity: highly toxic molecular structure: Properties 1. yellow or light yellow crystalline powder; 2. Melting point 110 ℃, relative density of 1.37 to 1.40; 3. soluble in benzene, dichloroethane, carbon disulfide, toluene, chloroform, slightly soluble in ethanol, insoluble in gasoline and water ; 4. odorless, tasteless, non-toxic; 5. storage stability. Applications 1. accelerator TMTM to not color, not pollution-promoting agent, mainly used for natural rubber and synthetic rubber. Activity than of TMTD be about 10% lower, vulcanized rubber elongation strength also slightly lower. Critical temperature vulcanization 121 ℃, aftereffect than thiuram disulfide and dithiocarbamate salt accelerator are large, good scorch resistance. The amount of sulfur when using a wider range of products, along with increased use of sulfur, a vulcanizing flatness narrows. 2. can be used alone, but also with an aldehyde amines, thiazoles, guanidine accelerators, etc. and use, it is thiazole accelerator active agent. Can be used as 54-1 type (ie W type) neoprene weak accelerator, while the effect of the delay in the vulcanization of Universal (GN-A type) neoprene. When latex with two dithiocarbamate and use, can reduce the tendency of the early vulcanized rubber. 3. accelerators TMTM can not break out of active sulfur, can not be used with sulfur-free. Easily dispersed in the rubber compound, mainly used to produce cable, tape, tires, hoses, hay products and footwear, transparent products, heat-resistant products. Specifications: Appearance yellow or light yellow crystalline powder Melting point / ℃ ≥ 100 ash /% ≤ 0.5 Moisture /% ≤ 0.5 Fineness (40 mesh sieve residue) ?????????????? ?????? - Acute toxicity: Intraperitoneal - rat LD50 383 mg / kg, oral - mouse LD50 818 mg / kg; flammability risks: Combustible, thermal decomposition of toxic nitrogen oxide, sulfur oxide fumes ; Storage features: Treasury ventilation low-temperature drying, and food materials stored separately; the type of extinguishing agent: To select dry powder, foam, sand, carbon dioxide, water spray type. Packing: 25kg / bag, plastic woven or kraft paper