E poxy Hardener HW-8310 is a Polycaprolactam curing agent suitable for ultra-fast hardening. It can be cured in a short time at low temperature; it is transparent and tough, with high adhesion strength, oil resistance, chemical resistance, and good electrical characteristics. 1. The physical and chemical properties Appearance Transparent liquid Viscosity(BH model CPS/25℃) 10000-14000 Amine value (mgKOH/g) 40-80 Color(G/H mothod) <1 Solid content 100 Specific Gravity(25℃) 0.93