Antioxidant 168 CAS 31570-04-4

Product name: Antioxidant 168

English alias: ris(2,4-di-tert-butylphenyl) Phosphite;TBPP.

CAS: 31570-04-4

Molecular formula: C42H63O3P

Appearance:  white powder

Package: 25kg/bag

What is Antioxidant 168？

Antioxidant 168 is a highly effective hydrolytically stable phosphite processing stabilizer widely used in polymer applications. This sterically hindered phosphite antioxidant excels at preventing polymer degradation during high-temperature processing by effectively decomposing hydroperoxides and scavenging free radicals. Its molecular structure features three bulky tert-butyl groups that provide exceptional resistance to hydrolysis, making it particularly valuable in applications requiring moisture resistance. Antioxidant 168 demonstrates excellent compatibility with various polymers and shows synergistic effects when used with phenolic antioxidants, significantly enhancing the overall stabilization system performance.

COA:

Application:

1.Polymer Stabilization:

Polyolefins: PP, HDPE, LDPE stabilization during processing and end-use

Engineering Plastics: PA, PBT, PC processing stabilization

Elastomers: Rubber compound protection against thermal degradation

2.Synergistic Systems:

With phenolic antioxidants (e.g., Antioxidant 1010, 1076) for enhanced stability

Multi-component stabilization systems for long-term thermal aging resistance

3.Specific Applications:

Fiber and filament production requiring high-temperature processing

Film and sheet extrusion with demanding optical requirements

Injection molding applications needing color stability

4.Industry Sectors:

Automotive components requiring long-term heat aging resistance

Electrical and electronic applications needing stable dielectric properties

Packaging materials for food and medical applications (compliant grades)

5.Specialty Formulations:

Masterbatch production for precise additive incorporation

Color-critical applications requiring minimal color formation

Safety profile:

Antioxidant 168 has low acute toxicity but may cause eye and skin irritation. Inhalation of dust should be avoided. Use appropriate personal protective equipment including gloves and safety glasses. The product is stable under normal conditions but may decompose at high temperatures. Always provide adequate ventilation during handling. For workplace safety, maintain dust concentrations below recommended exposure limits.

Storage requirements:

keep the product dry

relative humidity < 50%

protect product against influences of weather and contamination

Transport & Packaging:

Antioxidant 168 for technical applications is solely supplied in packaging of different sizes . It can be packaged in various items: 25 kg bags, 1000 kg bags.