Epoxy Hardener HW-8507 is an amidoamine curing agent produced by a special process. It has a very long pot life, good adhesion, and low viscosity. The cured product has excellent adhesion and water resistance. 1. The physical and chemical properties Appearance Light Yellowish transparent liquid Viscosity(CPS/25℃) 800-1500 Amine value (mgKOH/g) 370-430 Color(Gardener)