Diethylenetriamine

Diethylenetriamine (CAS 111-40-0), commonly abbreviated as DETA or DIEN, is a primary and secondary polyamine with the molecular formula C4H13N3. It is also identified under the names 2,2'-iminodiethylamine and 1,4,7-triazaheptane, and carries no assigned E-code. It is classified under HS code 29212900.

In epoxy coating and adhesive formulations, DETA functions as a room-temperature curing agent by reacting with epoxide groups to form a crosslinked thermoset network, improving chemical and mechanical resistance. In textile and paper processing, its buffering capacity allows precise pH control during dyeing and surface treatment operations. It also serves as a flame-retardant intermediate in polymer systems through nitrogen-based char promotion.

DETA is supplied in industrial and technical grades as a colourless liquid, with packaging typically available in drums and IBC containers. It is subject to REACH registration requirements within the EU. Buyers should request SDS documentation and confirm grade suitability against application-specific standards before procurement.