Antioxidant 802 is a phenolic secondary antioxidant used to improve long-term thermal stability (LTTS) in polymers. This compound is based on Dioctadecyl 3,3'-Thiodipropionate and plays an effective role in preventing thermal and oxidative degradation during processing and use.

It functions as a general thermal stabilizer, used alongside primary phenolic antioxidants and UV absorbers, and significantly enhances the chemical stability of polymers through a synergistic effect.

Properties of Antioxidant 802:
• Thioester structure with high antioxidant performance
• High melting point and low volatility
• Resistance to heat- and oxygen-induced degradation
• Approved for use in food contact applications

Applications:
• Polymers requiring long-term thermal stability
• Polyethylene (PE) power cables
• XLPE (cross-linked polyethylene) cables
• HDPE pipes
• Polypropylene (PP)
• Polyolefins used in automotive engines
• Styrene homopolymers and copolymers such as PS and ABS

It is also used as an antioxidant additive in lubricating oils.

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