This product is a metal deactivator,can be used either independently or together with antioxidant. It is applicable to polyethylene, polypropylene,polystyrene, polyamide, polyester and to the antioxidant used in phenolic resin. It is effectively preventing the polymeric substance from self-oxidation caused by transition metalion. More efficient if it is added to the polymeric substance used in insulated electric wire and cable.