High-Purity Isoprene (99.5%) from China
Isoprene (2-methyl-1,3-butadiene) with a purity of 99.5% by weight, a chemically defined acyclic unsaturated hydrocarbon used primarily as a monomer in synthetic rubber production. It falls under HTS 2901.24.20.00 due to its high purity exceeding 95% and classification as pure isoprene per Chapter 29 notes for separate organic compounds. This excludes mixtures or impure forms covered elsewhere.
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
• Provide third-party lab analysis certificates verifying ≥95% purity by weight to avoid reclassification; declare exact purity percentage on entry documents
• Common pitfall: contamination during transport dropping below threshold—use inert atmosphere packaging