Buta-1,3-diene (1,3-Butadiene) from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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