Antioxidant 6PPD, chemically known as N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine and identified by CAS number 793-24-8, is a cornerstone additive in the rubber industry. Its unique chemical structure confers excellent properties, making it an indispensable stabilizer and antioxidant for a wide array of rubber products. Understanding these properties is key for product formulators and procurement managers alike.

The physical characteristics of 6PPD typically include being a blackish brown granule or appearing as yellow to purple flake crystals. With a melting point around 45-46°C and a solidifying point of not less than 46.0°C, it's stable under normal storage conditions. Its solubility in common organic solvents like acetone, ethyl acetate, and benzene, while being practically insoluble in water, dictates its processing and incorporation methods. A notable chemical property is its high flash point (around 204°C), indicating good thermal stability during rubber processing.

The primary application of 6PPD lies in its function as a high-efficiency antioxidant and a powerful antiozonant for rubber. It is extensively used in synthetic rubber stabilization, significantly improving the aging resistance and durability of vulcanized rubber. This makes it vital for products exposed to harsh environmental conditions, such as automotive tires where it protects against cracking caused by ozone and flex fatigue. Its low solvent-extraction properties ensure that its protective benefits are long-lasting.

For businesses seeking to purchase 6PPD, understanding these chemical properties helps in optimizing its use within their formulations. Whether you are a research scientist developing new rubber compounds or a purchasing agent looking for reliable chemical intermediates, knowing the performance profile of 6PPD is essential. Manufacturers and suppliers in China offer this critical additive, providing a cost-effective solution for enhancing rubber product performance and longevity.