Undecylenic Acid from Japan

Undecylenic acid is a mono-unsaturated acyclic monocarboxylic acid with 11 carbons and terminal double bond, used in antifungal treatments. Classified in HTS 2916.19.30.00 as 'other' unsaturated acyclic monocarboxylic acids. Derived from castor oil pyrolysis.

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

• EPA/TSCA notification if antimicrobial claim; provide synthesis method documentation

• Verify no conjugation of double bonds to avoid essential oil classification