2901.23.00.00/1,3-Butadiene (refined isomer)/Japan

1,3-Butadiene (refined isomer) from Japan

While primarily under 2901.24, highly purified 1,3-butadiene can be considered a butene-related diene isomer under HTS 2901.23.00.00 when specified as such. Used exclusively for synthetic rubber (SBR) production.

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%

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Import Tips

• Provide distillation specs showing <50ppm impurities for pure compound status

• Include polymerization inhibitor certificate to prevent reclassification

• Monitor for butene/butadiene mixture thresholds triggering 2901.29