In the sophisticated world of polymer manufacturing, where material integrity and performance are paramount, chemical additives serve as the unsung heroes. Among these, Antioxidant 168 (CAS 31570-04-4) occupies a critical position. As a highly effective phosphite processing stabilizer, it safeguards polymers from degradation, ensuring that products meet the demanding standards of modern industries. For procurement managers and R&D scientists in the chemical and materials sectors, understanding the chemistry and utility of Antioxidant 168 is essential for optimizing production processes and enhancing product value.

Antioxidant 168: Chemical Structure and Function
Antioxidant 168, chemically known as Tris(2,4-di-tert-butylphenyl) phosphite, is a molecularly engineered compound designed to combat oxidative degradation in polymers. Its structure features a central phosphorus atom bonded to three sterically hindered phenyl groups. This arrangement imparts unique properties, including excellent thermal stability and a crucial resistance to hydrolysis. Its primary function is to act as a secondary antioxidant, adept at decomposing hydroperoxides, which are key instigators of polymer breakdown during high-temperature processing. By intercepting these reactive species, Antioxidant 168 prevents the propagation of degradation, thereby preserving the polymer's intended molecular weight and physical characteristics.

Key Performance Attributes
The effectiveness of Antioxidant 168 is attributed to a combination of key features:

  • Processing Stability: It provides robust protection for polymers during manufacturing processes such as extrusion, injection molding, and compounding, environments where heat and shear can accelerate degradation.
  • Synergistic Performance: Antioxidant 168 works exceptionally well in conjunction with primary antioxidants, such as hindered phenols. This synergistic relationship enhances the overall stabilization system, offering superior protection against both short-term processing degradation and long-term thermal aging.
  • Hydrolytic Stability: Its remarkable resistance to moisture ensures that the antioxidant maintains its efficacy even in humid conditions, a crucial factor for consistent product quality.
  • Low Volatility: This property ensures minimal loss of the additive during high-temperature operations, leading to better material utilization and cost efficiency.

Broad Industrial Applications
Antioxidant 168 is a versatile additive employed across a wide range of polymers and industries:

  • Polyolefins (PE, PP): Essential for maintaining the mechanical integrity and appearance of films, fibers, and molded articles.
  • Engineering Plastics (PC, PA, ABS): Crucial for preserving the high-performance characteristics required in automotive, electronics, and construction applications.
  • Elastomers and Rubber: Helps prevent premature aging and degradation, maintaining the flexibility and durability of rubber components.
  • Adhesives and Coatings: Improves the shelf-life and performance stability of these formulations when exposed to environmental factors.

Sourcing Excellence: Partnering with NINGBO INNO PHARMCHEM CO.,LTD.
As a leading manufacturer and supplier of specialty chemicals, NINGBO INNO PHARMCHEM CO.,LTD. is committed to delivering high-quality Antioxidant 168 that meets the exacting demands of the B2B market. We understand the critical role of reliable raw materials in achieving manufacturing excellence. Our stringent quality control measures, coupled with a robust supply chain, ensure that our clients receive consistent, high-purity products at competitive prices. We invite you to explore our offerings and discuss how our expertise in chemical solutions can support your product development and manufacturing goals. Contact us today for detailed specifications, pricing, and sample availability.