4-Methyl-1-Pentene from China
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 — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• 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