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Polymerization-Grade Isoprene (98%) from Japan

98% pure isoprene specifically refined for synthetic rubber polymerization, meeting industrial standards for cis-1,4-polyisoprene production. Classified under HTS 2901.24.20.00 as a high-purity (≥95%) acyclic unsaturated hydrocarbon, distinct from lower-grade or mixed hydrocarbons.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Include supplier's certificate of analysis (COA) specifying polymerization-grade purity; ensure compliance with TSCA for chemical imports

Pitfall: improper storage leading to oxidation—ship refrigerated