The product under consideration is “Rubber Chemicals PX-13” (hereinafter also referred to as PX-13) also known as 6PPD, Antioxidant 6PPD, Kumanox 13, Santoflex 6PPD, Sirantox 6PPD, Vulkanox 4020, Antioxidant 4020, Dussantox 6PPD, Antage 6C, N-1,3-Dimethylbutyl)-N'-Phenyl-P-Phenylenediamine, etc.
PX-13 is an alkyl-aryl-PPD antidegradant most widely used in the tyre and nontyre sector of the rubber industry. PX-13 offers excellent resistance to rubber vulcanizates against degradative forces such as ozone (static as well as dynamic), flexcracking and fatigue, oxidative heat ageing, metal-ion catalyzed oxidative ageing, UV light and weathering. It is used as antioxidants in treating natural rubber, synthetic rubber (SBR, Butadiene Rubber, Nitrile Rubber, Carboxylated Rubber) and other Page 2 of 6 synthetic rubber-based compounds used for manufacture of various rubber products to achieve the desired life cycle of the rubber product. PX-13 is manufactured by reductive alkylation of 4ADPA and MIBK.
The product is classified under the Chapter 38 of the First Schedule to the Customs Tariff Act, 1975 (51 of 1975) under the tariff custom classification 3812. However, there are also imports for the product under consideration under the Chapter 29 of the First Schedule. The customs classification is only indicative and is not binding on the scope of the product under consideration.