Buta-1,3-diene (1,3-Butadiene) from China
Buta-1,3-diene is a colorless, flammable gas with the molecular formula C4H6, classified as an acyclic unsaturated hydrocarbon under HTS 2901.24.10.00 due to its conjugated double bonds and four-carbon chain structure. It serves as the primary monomer for synthetic rubber production.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify purity levels (typically >99%) via Certificate of Analysis to confirm classification under pure butadiene heading
• Ensure proper DOT/UN 1010 hazardous material documentation and cryogenic storage compliance for gaseous imports
• Avoid misclassification as mixtures; even trace impurities must be documented if exceeding chapter note thresholds