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31570-04-4
bosschem
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
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.
外观 Appearance | 白色粉末 white powder | 白色粉末 white powder | |
纯度 Purity（%） | ≥99.0 | 99.8 | |
溶解性 solubility | 清澈Clear and transparent | 清澈Clear and transparent | |
挥发性 volatile | ≤0.30 | 0.21 | |
抗水解性能（95℃水中,5H） Resistance to hydrolysis (95℃ water,5H) | 合格 Passed | 合格 Passed | |
酸值Acid value | ≤0.30 | 0.05 | |
熔点 M.P. | 183.0-187.0℃ |
185.1-186.5 | |
游离2，4二叔丁基苯酚 Free 2,4-Di-tert-butylphenol | ≤0.20 | 0.04 | |
透光率 Light transmittance | 425nm | ≥98.0 | 99.3 |
500nm | ≥98.0 | 99.6 | |
Polyolefins: PP, HDPE, LDPE stabilization during processing and end-use
Engineering Plastics: PA, PBT, PC processing stabilization
Elastomers: Rubber compound protection against thermal degradation
With phenolic antioxidants (e.g., Antioxidant 1010, 1076) for enhanced stability
Multi-component stabilization systems for long-term thermal aging resistance
Fiber and filament production requiring high-temperature processing
Film and sheet extrusion with demanding optical requirements
Injection molding applications needing color stability
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)
Masterbatch production for precise additive incorporation
Color-critical applications requiring minimal color formation
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.
keep the product dry
relative humidity < 50%
protect product against influences of weather and contamination
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.
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
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.
外观 Appearance | 白色粉末 white powder | 白色粉末 white powder | |
纯度 Purity（%） | ≥99.0 | 99.8 | |
溶解性 solubility | 清澈Clear and transparent | 清澈Clear and transparent | |
挥发性 volatile | ≤0.30 | 0.21 | |
抗水解性能（95℃水中,5H） Resistance to hydrolysis (95℃ water,5H) | 合格 Passed | 合格 Passed | |
酸值Acid value | ≤0.30 | 0.05 | |
熔点 M.P. | 183.0-187.0℃ |
185.1-186.5 | |
游离2，4二叔丁基苯酚 Free 2,4-Di-tert-butylphenol | ≤0.20 | 0.04 | |
透光率 Light transmittance | 425nm | ≥98.0 | 99.3 |
500nm | ≥98.0 | 99.6 | |
Polyolefins: PP, HDPE, LDPE stabilization during processing and end-use
Engineering Plastics: PA, PBT, PC processing stabilization
Elastomers: Rubber compound protection against thermal degradation
With phenolic antioxidants (e.g., Antioxidant 1010, 1076) for enhanced stability
Multi-component stabilization systems for long-term thermal aging resistance
Fiber and filament production requiring high-temperature processing
Film and sheet extrusion with demanding optical requirements
Injection molding applications needing color stability
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)
Masterbatch production for precise additive incorporation
Color-critical applications requiring minimal color formation
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.
keep the product dry
relative humidity < 50%
protect product against influences of weather and contamination
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.
