99% Pure Isoprene Monomer from Japan
High-purity isoprene (2-methyl-1,3-butadiene) used as a key monomer in synthetic rubber production. This acyclic unsaturated hydrocarbon falls under HTS 2901.24.50.00 as 'other' isoprene not specified elsewhere in the isoprene subheading. It meets Chapter 29 requirements for separate chemically defined organic compounds.
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
• Provide Certificate of Analysis (COA) confirming ≥99% purity and isoprene chemical identity per Chapter 29 definitions
• Ensure proper UN 2357 hazardous material declaration and DOT/IMDG shipping papers for flammable liquid
• Verify stabilizer content doesn't change classification; common pitfall is misclassifying stabilized vs pure forms