p,p'-Dicumyldiphenylamine from Canada
p,p'-Dicumyldiphenylamine serves as a high-temperature stable antioxidant for synthetic elastomers and petroleum products. Classified in HTS 2921.44.2000 because it's enumerated in additional U.S. note 3 to section VI for quota-controlled diphenylamine derivatives. Its bulky cumyl groups prevent radical chain reactions effectively.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Use ISF filing 24 hours prior with precise chemical identification to avoid holds
• Provide end-use statements confirming industrial chemical application
• Watch for re-export documentation if quota goods diverted