Hangzhou Leap Chem Co., Ltd. is one of the most professional manufacturers and suppliers of n,n-diphenyl-1,4-phenylenediamine丨cas 74-31-7 in China. Welcome to wholesale bulk high quality chemical products at competitive price from our factory. If you have any enquiry about custom service, please feel free to email us.
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Specifications
| Appearance: | Greyish brown powder |
| Initial melting point: | 140.0℃ min |
| Ash content: | 0.40% max |
| Decrement by heating: | 0.40% max |
| Remainder through sieving: | 1.0% max |
Applications
1. Rubber and Tire Industry (Primary Use)
Antioxidant: DPPD is widely used as an antioxidant in the production of natural and synthetic rubber, especially in tires, belts, and hoses.
Protects rubber from degradation due to:
Heat
Oxygen
Ozone
Improves aging resistance and extends service life of rubber products.
2. Lubricant Additive
Acts as an oxidation inhibitor in lubricating oils, especially in engine oils and hydraulic fluids.
Helps maintain oil stability and performance at high temperatures and over extended use.
3. Plastics and Polymer Stabilization
Occasionally used in plastics to prevent polymer degradation under heat or UV exposure.
4. Chemical Intermediate
Functions as a building block or intermediate in the synthesis of:
Dyes
Pigments
Specialty chemicals
Benefits
1. Outstanding Antioxidant Efficiency
Strong ability to scavenge free radicals and peroxides, significantly delaying the oxidation process in rubber and oils.
2. Heat and Ozone Resistance
Provides excellent protection against both thermal oxidation and ozone cracking, which are common aging factors in elastomeric materials.
3. Long-Term Durability
Extends the functional lifespan of rubber-based products and lubricants under harsh environmental conditions.
4. Compatibility
Compatible with a wide range of rubber types, including:
Natural rubber (NR)
Styrene-butadiene rubber (SBR)
Nitrile rubber (NBR)
Butadiene rubber (BR)
Conclusion
N,N-Diphenyl-1,4-phenylenediamine (DPPD) is a powerful antioxidant and anti-aging agent used mainly in the rubber industry and lubricant formulations. Its ability to stabilize against heat, oxygen, and ozone makes it vital for enhancing the performance and longevity of industrial materials, particularly tires and elastomeric components exposed to extreme conditions.
Let me know if you'd like this in table format or need SDS/restriction compliance details (e.g., REACH, TSCA).
