Triethylamine is an organic weak base that is alkaline in aqueous solution and corrosive, capable of corroding aluminum, zinc, copper, and their alloys (in the presence of humid air). It is an important organic chemical intermediate and excellent solvent, mainly used in organic synthesis (as a base catalyst or neutralizer, involved in the synthesis of drugs (such as antibiotics), pesticides, and dyes), preparation of quaternary ammonium compounds (used to prepare quaternary ammonium compounds), polymer materials (epoxy resin curing promoter, improving polyurethane and rubber properties; polymerization catalyst), industrial solvents and extractants (used for organic separation and purification due to moderate polarity; solvents), pharmaceutical industry (drug synthesis intermediate), pesticide industry (pesticide intermediate), dye industry (synthetic dyes), rubber industry (rubber vulcanization promoter, activator), photographic industry (photographic chemicals), preservatives, and polymerization inhibitors; Penetrating agent, waterproofing agent; Corrosion inhibitors; Seawater desalination; Textile additives, coating additives; propellant