In the realm of rubber chemistry, selecting the right antioxidant is critical for ensuring product longevity and performance. Among the most commonly used p-phenylenediamine antioxidants are 6PPD (CAS: 793-24-8) and 4010NA. While both serve the fundamental purpose of protecting rubber from degradation, they possess distinct characteristics that make them suitable for different applications. As a dedicated supplier of rubber additives, we provide insights to help manufacturers make informed decisions.

Rubber Antioxidant 6PPD, also known as N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, is highly regarded for its excellent comprehensive protective properties. It offers robust resistance to oxidation, ozone, and flex cracking. A significant advantage of 6PPD is its lower toxicity and reduced skin irritation compared to 4010NA. Furthermore, its solubility in water is considerably better, indicated by a lower wash loss rate (approximately 20% for 6PPD versus 50% for 4010NA). This improved solubility means 6PPD is less likely to be leached out of the rubber matrix by moisture, providing more sustained protection.

On the other hand, Antioxidant 4010NA, or N-(1,3-Dimethylbutyl)-N-phenyl-p-phenylenediamine, is also a potent antiozonant and antioxidant. It is widely used in the rubber industry and offers good protection against degradation. However, historical data suggests it may have higher toxicity and a greater potential for skin sensitization than 6PPD. The lower water solubility of 4010NA can be a drawback in certain environmental conditions or manufacturing processes where leaching is a concern.

When making a choice between 6PPD and 4010NA, manufacturers must consider the specific demands of their application. For tire manufacturing and other applications where extreme durability against ozone and flex fatigue is paramount, and where discoloration is not a major issue, 6PPD is often the preferred choice due to its superior overall performance and improved safety profile. Its effectiveness in inhibiting harmful metal ions like copper and manganese further solidifies its position as a high-performance additive.

For industries that require light-colored products, neither 6PPD nor 4010NA is typically suitable due to their inherent tendency to cause staining. In such cases, alternative antioxidant systems would need to be employed.

As a leading manufacturer and supplier, we offer both 6PPD and other high-quality rubber additives. We understand that selecting the right chemical is a critical decision. Our team is available to provide detailed technical specifications, safety data, and pricing information to help you determine which antioxidant best suits your formulation. If you are looking to buy 6PPD or need advice on rubber protection, contact us to discuss your needs and receive a competitive quote. Ensuring the correct additive is chosen is key to unlocking the full potential of your rubber products.