H2NCH2CH2NHCH2CH2NH2

Diethylenetriamine (DETA) is an organic compound with the formula C4H13N3. It is a triamine consisting of two terminal primary amine groups connected by a secondary amine in the center: H2N-CH2-CH2-NH-CH2-CH2-NH2. The molecule is a hygroscopic liquid at room temperature, typically colorless to pale yellow, with a distinct ammonia-like odor. It is miscible with water and many polar organic solvents and is more basic than many amines.

Production and occurrence: DETA is produced commercially as a polyamine intermediate for the chemical industry. The exact manufacturing routes vary by producer, but the compound is distributed as technical-grade material and as concentrated solutions. It is often used as a building block for larger polyamines and resins.

Applications: Diethylenetriamine serves as a versatile crosslinking and curing agent. It is widely used in epoxy resin systems to promote curing, in the synthesis of polyurethanes and polyamide resins, and as a precursor for other polyamines and surfactants. In addition, it finds use in lubricant additives, resin modifiers, and various chemical intermediates.

Safety and handling: DETA is corrosive and irritating to skin, eyes, and the respiratory tract. Handling requires appropriate personal protective equipment, including gloves and eye protection, and operations in a well-ventilated area. It should be stored in tightly closed containers in a cool, dry place away from oxidizers and incompatibles. Contact with oxidizers can be hazardous, and exposure should be minimized through proper containment and engineering controls.