D.E.H. 26 EPOXY HARDENER - OLIN is an economical liquid aliphatic polyamine hardener, tetraethylenepentamine (TEPA), that offers a short pot life and cures in minutes with standard unmodified liquid epoxy resins. Similar to D.E.H. 24 in application, it provides a lower vapor hazard to workers due to its higher boiling point. is used in maintenance paints, the manufacture of epoxy-amine adducts, adhesives, civil engineering applications, and as an accelerator for polyamide curing agents. In electrical applications, it is used for casting, potting, and encapsulation.