4-Methyl-1-Pentene from China
4-Methyl-1-pentene is a branched alpha-olefin (C6H12) produced from petroleum raffinates. It falls under HTS 2901.29.1050 as an 'other' petroleum-derived unsaturated acyclic hydrocarbon, distinct from straight-chain olefins. Used as comonomer in specialty polypropylenes and as chemical intermediate.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Import Tips
• CAS 691-37-2 documentation essential; distinguish from isoprene (different double bond position)
• Inhibited with 10-50 ppm BHT; declare inhibitor type to avoid stability issues during customs hold