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Antioxidant 1135 CAS 125643-61-0
Antioxidant 1135 CAS 125643-61-0 is a liquid hindered phenolic antioxidant designed for polyurethane products. It has the characteristics of good compatibility with polyurethane and has good processing stability and long-term oxidation resistance to polymers. Antioxidant 1135 is a highly effective, low volatile liquid product that is used in combination with amine antioxidants.
| Item | Specification |
| Water solubility | 30-121μg/L at 20℃ |
| Boiling point | 343-370.65℃[at 101 325 Pa] |
| Density | 0.96-0.97[at 20℃] |
| Vapor pressure | 0-0.002Pa at 20-25℃ |
| LogP | 7.18-9.2 at 0-30℃ |
Antioxidant 1135 CAS 125643-61-0 is a high-performance liquid phenolic antioxidant widely used in polyurethane systems, lubricants, rubber, and elastomer applications. Its excellent compatibility and low volatility make it suitable for both processing stabilization and long-term thermal oxidation protection.
Typical applications include:
- Polyurethane foam and elastomer systems
- Synthetic lubricants and industrial oils
- Rubber and thermoplastic elastomers
- Polyether and polymer stabilization
- Industrial additive formulations
As part of the Unisun Chemical Home product portfolio, Antioxidant 1135 can be combined with other Antioxidant Products to improve thermal stability and extend product service life.
For advanced polymer protection systems, it is also commonly formulated together with Light Stabilizer Products and UV Absorber Products in outdoor and high-temperature applications.
- Excellent long-term oxidation resistance
- Liquid form for easier blending and handling
- Low volatility under high-temperature processing
- Good compatibility with polyurethane systems
- Effective stabilization for lubricants and elastomers
- Improves polymer durability and thermal stability
- Suitable for industrial and specialty formulations
Antioxidant 1135 is an ideal antioxidant solution within the Unisun Chemical Products range for manufacturers requiring reliable liquid antioxidant performance.
It can also be used synergistically with products such as Antioxidant 5057 CAS 68411-46-1 for enhanced stabilization efficiency in demanding applications.
Usually packed in 200kg/drum, and also can be do customized package.

Q1. What is Antioxidant 1135 CAS 125643-61-0 used for?
Antioxidant 1135 is mainly used in polyurethane systems, lubricants, rubber, and elastomers to improve oxidation resistance and long-term thermal stability.
Q2. Is Antioxidant 1135 a liquid antioxidant?
Yes. Antioxidant 1135 is a liquid hindered phenolic antioxidant that offers easy processing, blending, and excellent compatibility with polymer systems.
Q3. Why is Antioxidant 1135 suitable for polyurethane applications?
It provides excellent compatibility with polyurethane materials while improving processing stability and reducing oxidative degradation during long-term use.
Q4. Can Antioxidant 1135 be combined with other stabilizers?
Yes. It is commonly used together with Antioxidants, UV Absorbers, and Light Stabilizers for enhanced polymer protection.
Q5. Where can I find more polymer additives from Unisun Chemical?
You can explore more chemical additives and stabilization solutions on the Unisun Chemical Home Page.


























