JYANOX-168 is phosphite ester antioxidant with excellent hydrolytical stability. It widely used in polyethylene, polypropylene, nylon, polycarbonates, styrene copolymers. JYANOX-168 is generally not used alone, often compound with hindered phenol, such as JYANOX-1010, 1076 to achieve synergistic performance, provide good anti-aging degradation performance for polymers during melt processing, and give the polymer materials good protection against high temperature discoloration.