1,3-Butadiene (refined isomer) from Canada
While primarily under 2901.24, highly purified 1,3-butadiene can be considered a butene-related diene isomer under HTS 2901.23.00.00 when specified as such. Used exclusively for synthetic rubber (SBR) production.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide distillation specs showing <50ppm impurities for pure compound status
• Include polymerization inhibitor certificate to prevent reclassification
• Monitor for butene/butadiene mixture thresholds triggering 2901.29