4-Methyl-1-Pentene from Japan
4-Methyl-1-pentene is a branched acyclic mono-olefin with formula C6H12 and terminal double bond. Classified under 'other' unsaturated acyclic hydrocarbons not specifically named. Used in specialty polymer and synthetic lubricant production.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify exact isomer structure in commercial invoice to prevent confusion with cyclic isomers
• Monitor anti-dusting agent levels; excess triggers Chapter note 1(g) limitations
• Provide end-use declaration if >99% pure to avoid chemical mixture scrutiny