Reactive non-extractable antioxidant MC (SF-98) is used for natural rubber and all kinds of compounding rubber. It is a kind of reactive heat-resistant aging, medium extraction, non-migration pollution antioxidant, which can replace 4010NA, 4020 and other antioxidants used in rubber compounds. The dosage and vulcanization conditions are the same as 4010NA antioxidant, generally two parts.