Antioxidant 168, known scientifically as Tris(2,4-di-tert-butylphenyl)phosphite or TNPP for short, is an effective phosphite antioxidant that is widely used as a thermal stabilizer for polymers in the plastics industry. It is one of the most important additives to prevent oxidation and chain degradation of polymers during the production process and throughout the product's useful life.

Physical and Chemical Properties of Antioxidant 168

•        Appearance: White powder

•        Solubility: Soluble in organic solvents such as benzene, chloroform, cyclohexane, slightly soluble in acetone and ethanol, insoluble in water and other polar solvents such as alcohols and esters

•        Low toxicity

•        Low volatility

•        High thermal stability

•        Excellent resistance to thermal and photodegradation

This compound acts as a secondary antioxidant and is usually used together with primary phenolic antioxidants such as Antioxidant 1010 to increase the effectiveness of thermal and photostabilization of polymers.

How does Antioxidant 168 work?

In the oxidation process, free radicals can cause the destruction of polymer chains. Antioxidant 168 inhibits these chain reactions by absorbing and neutralizing peroxides and radicals, preventing polymer degradation and degradation. For this reason, this compound is a popular choice in various polymer industries where it is used in high temperature conditions and extrusion processes.

Applications of Antioxidant 168

TNPP antioxidant is widely used in combination with phenolic antioxidants to enhance process stability and polymer performance. Its applications include:

•        Polyethylene (PE)

•        Polypropylene (PP)

•        Polystyrene (PS)

•        Polycarbonate (PC)

•        Acrylonitrile butadiene styrene (ABS)

•        Polyamide (PA)

•        Other olefin copolymers

Benefits of using Antioxidant 168 in industry

•        Increasing the useful life of plastics

•        Preventing discoloration and surface degradation

•        Maintaining the mechanical and physical properties of polymers

•        Improving the stability of the production process

Antioxidant 168 is a vital additive in the polymer and plastic industry that, as a supplement to primary antioxidants, prevents thermal and oxidative degradation. High stability, low toxicity and wide compatibility with a variety of polymers are the reasons for its popularity in the production of heat and light-resistant plastic products.

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