Hydrolytically stable phosphite processing stabilizer


Veenox 168 is a hydrolytically stable phosphite processing stabilizer. Veenox 168 reacts during processing with hydroperoxides formed by autoxidation of polymers preventing process induced degradation and extending the performance of primary antioxidants.


    General Information and Properties

    CAS no: 31570-04-4
    Chemical name: Tris(2,4-di-tert butylphenyl) phosphite
    Molecular formula: C42H63O3P
    Molecular weight: 646.9 g/mol

    Physical Properties

    Parameter Specification
    Appearance White, free flowing powder
    Melting Range 183 – 186°C
    Density (20 °C) 1.03 g/ml
    Bulk Density 480 – 570 g/l

    Properties That Influence the Application and Performance

    Veenox 168 or Antioxidant 168, boasts exceptional properties that make it a highly sought-after solution for industries looking to protect their materials from degradation caused by exposure to heat, light, and other environmental factors.

    • Oxidation Inhibition:
      As a primary antioxidant, Veenox 168 efficiently inhibits the oxidation process by scavenging free radicals, thereby preventing chain reactions that lead to material degradation.
    • Thermal Stability:
      The chemical’s impressive thermal stability allows it to function effectively in high-temperature applications, protecting materials even under elevated processing conditions.
    • Non-Discolouring:
      Veenox 168’s non-discolouring nature ensures that the appearance and aesthetics of the end products remain unaffected, maintaining their visual appeal over time.
    • Synergistic Effects:
      With Veenox 1010, you can significantly extend the shelf life of your products, ensuring that they maintain their quality and efficacy for a longer duration.
    • Dosage
      This antioxidant exhibits synergistic effects when used in combination with other stabilizers, enhancing overall performance and extending the service life of materials.



    As a primary antioxidant, Veenox 168 efficiently neutralizes free radicals, preventing oxidative chain reactions that lead to material degradation. As a result, it significantly enhances the longevity and stability of various end products.

    • Polymers and Plastics:
      Veenox 168 serves as a primary stabilizer in various polymers and plastics PVC, Masterbatch and Polyethylene, Polypropylene, Polystyrene, providing long-term protection against degradation caused by heat, light, and environmental exposure. Its role in inhibiting chain scission and cross-linking reactions ensures the preservation of mechanical and physical properties, resulting in durable and high-quality materials.
    • Rubber Products:
      In the rubber industry, Veenox 168 plays a crucial role in preserving the elasticity and resilience of rubber-based products, even in challenging environments.
    • Coatings and Paints:
      Veenox 168 is employed as an additive in coatings and paints to protect against oxidative degradation, ensuring that coated surfaces maintain their appearance and structural integrity over time.
    • Lubricants and Oils:
      The chemical’s thermal stability makes it an ideal choice as an antioxidant for lubricants and oils, safeguarding machinery components and extending their service life.
    • Adhesives and Sealants:
      As an antioxidant in adhesives and sealants, Veenox 168 enhances the stability and performance of these formulations, promoting reliable bonding and sealing properties.
    • Other Industrial Applications:
      Beyond the mentioned industries, Veenox 168 finds use in various applications, ensuring superior protection against degradation in diverse materials.


    Packaging & Shipping Information

    • The product is available in both PW (Powder) and GR (Granule) form.
    • Packing: 25kg/Bag, 500kg/Pallet, 10MT/20’FCL.
    • Our product is EU REACH certified.

    About Vinati Organics

    Veenox 168, a phosphite antioxidant 168, is a highly effective and versatile hindered phenol antioxidant Vinati Organics offers. With its outstanding properties, Veenox 168 plays a crucial role in various industrial applications, protecting materials from oxidative degradation and ensuring their longevity and reliability. As one of the leading manufacturers of organic chemical products, Vinati Organics’ commitment to excellence and innovation is evident in the superior performance of Veenox 168.

    Vinati Organics, a pioneering chemical manufacturer based in India, has earned a global reputation for excellence and innovation. As one of the leading manufacturers of organic chemical products, Vinati Organics takes immense pride in producing top-quality and highly effective phosphite antioxidants like Veenox 168. Through extensive research and rigorous testing, Vinati Organics ensures the effectiveness and reliability of all its chemical products. With an unwavering commitment to excellence, Vinati Organics continues to contribute significantly to diverse industries worldwide. With Vinati Organics as your partner, you can rely on expertise and high-quality solutions to effectively meet your specific industrial needs.

    Note: Note: For more detailed technical specifications, product data sheets, or any specific queries, please contact our customer support team.

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