4-Methyl-1-Pentene from Japan
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 — Japan → United States
10%
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
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