Diethyltoluenediamine (DETDA) is a high-efficiency liquid aromatic diamine chain extender and curing agent, widely used in polyurethane (PU) and polyurea industries. As a sterically hindered diamine, it exhibits moderate reactivity—faster than MOCA but slower than DMTDA—making it ideal for RIM (Reaction Injection Molding) and SPUA (Sprayed Polyurea Elastomer) systems. It significantly enhances the strength, hydrolysis resistance, and heat resistance of PU products, shortening demolding time and boosting production efficiency. Key applications include PU elastomers, coatings, adhesives, sealants, and foams (e.g., automotive cushions, shoe soles, and industrial rollers). It also serves as a curing agent for epoxy resins, an antioxidant for plastics/rubbers, and an intermediate for pesticides, dyes, and lubricants. With excellent compatibility with polyether/polyester polyols, it meets the demands of high-performance PU material manufacturing.

This chemical is corrosive and irritating, requiring strict handling protocols. Direct skin contact causes severe redness, itching, and chemical burns; prolonged exposure may lead to dermatitis. Eye contact results in intense stinging, tearing, conjunctival swelling, and potential corneal damage if untreated. Inhalation of vapor/mist irritates the respiratory tract, causing cough, sore throat, dizziness, and nausea; high concentrations may induce respiratory distress. Ingestion burns the oral/gastrointestinal mucosa, causing abdominal pain, vomiting, and diarrhea. Operators must wear chemical-resistant gloves, splash-proof goggles, and respirators, working in a ventilated fume hood. Store in cool, dry, dark places (≤30°C) with tightly sealed containers, away from light, heat, oxidants, acids, and food. Skin contact: rinse with plenty of soapy water for 15+ minutes; eye contact: flush with running water for 15+ minutes and seek medical help immediately. Dispose of waste per hazardous chemical regulations to avoid environmental contamination.