Rubber Antioxidant 6PPD/4020 Antioxidant 6PPD/4020 Specification: ITEMIndexAppearanceDark purple pastilles.Dark purple pastilles.Melting Point45.0 MINHeating loss0.50% MAXAsh0.15% MAXAssay(GC)96.0% MINSolidifying point45.5 MINApplication : Mainly used in manufacture of tires , rubber shoes and other rubber products