Dimethyl Thio-toluene Diamine / DMTDA CAS 106264-79-3

1. Dimethyl thio-toluene diamine is primarily used as a low-toxicity, liquid diamine chain extender and curing agent for polyurethane elastomers, serving as a safer alternative to MOCA (4,4'-methylene-bis(2-chloroaniline)) with the added benefit of being a liquid at room temperature for easier processing .
2. The compound functions as a curing agent in spray polyurea elastomers (SPUA), reaction injection molding (RIM) systems, and high-performance coatings, where DMTDA CAS 106264-79-3 imparts excellent mechanical properties including tensile strength, abrasion resistance, and chemical resistance .
3. DMTDA is employed as a curing agent for epoxy resins and in the formulation of high-strength adhesives and sealants for applications in the automotive, aerospace, construction, mining, and electronics industries .
4. In polyurethane applications, DMTDA can be blended with other liquid amines such as DETDA to adjust curing rates and working times, offering formulators flexibility in achieving specific processing and mechanical property profiles .

1. Dimethyl thio-toluene diamine must be stored in a tightly sealed container in a cool, dry, and well-ventilated environment, protected from light and heat sources; recommended storage below 15°C in a cool, dark place, with a typical shelf life of 1 year .
2. DMTDA CAS 106264-79-3 is classified with GHS hazard statements H302 (Harmful if swallowed), H317 (May cause an allergic skin reaction), and H410 (Very toxic to aquatic life with long lasting effects), with signal word "Warning" .
3. Personnel must wear chemical-resistant gloves (nitrile or neoprene), safety goggles with side-shields, and protective clothing when handling this substance; avoid breathing mists or vapors and ensure adequate ventilation in work areas .
4. Keep DMTDA CAS 106264-79-3 away from incompatible materials such as strong oxidizing agents, strong acids, and strong bases to prevent decomposition. Store separately from foodstuff containers and avoid release to the environment .

1. Isolate the spill area, ensure adequate ventilation, and wear full personal protective equipment including chemical-resistant gloves, safety goggles, and suitable respirator when cleaning up DMTDA .
2. Collect DMTDA CAS 106264-79-3 by absorbing with inert absorbent materials such as sand, vermiculite, or diatomaceous earth using non-sparking tools, and place into suitable closed containers for disposal .
3. Avoid creating splashes or mists during cleanup to prevent skin and eye exposure; prevent the product from entering drains, sewers, or water courses due to high aquatic toxicity .
4. Dispose of collected material according to local, state, and federal environmental regulations through licensed chemical destruction or controlled incineration. Contaminated packaging should be triply rinsed and offered for recycling or disposed of in a sanitary landfill .

1. Dimethyl thio-toluene diamine is not classified as highly flammable (flash point 163-176°C) but will decompose under fire conditions above 225°C, emitting toxic fumes including carbon monoxide, carbon dioxide, nitrogen oxides, and sulfur oxides .
2. Use dry chemical powder, carbon dioxide, alcohol-resistant foam, or water spray to extinguish fires involving the product. Do not use a direct water jet as DMTDA CAS 106264-79-3 may scatter burning material .
3. Firefighters should wear self-contained breathing apparatus (SCBA) in pressure-demand, NIOSH-approved, and full protective gear when handling fires involving this compound due to hazardous decomposition gases generated during thermal decomposition .
4. During combustion, may emit irritant and toxic fumes; contain fire runoff to prevent environmental contamination. Avoid release of extinguishing water into drains or water courses due to aquatic toxicity .