Crotonic Acid from Japan
Crotonic acid (2-butenoic acid, CH3CH=CHCOOH) is an unsaturated acyclic monocarboxylic acid with a trans double bond. Classified under HTS 2916.19.50.00 as 'other' unsaturated acyclic acids. Used in resins, plastics, and pharmaceuticals.
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
• Submit certificate of analysis verifying trans-crotonic acid structure (CAS 3724-65-0 or 97-65-4) to distinguish from isomers
• Declare if stabilized with hydroquinone; note Chapter 29(f) allows stabilizers without reclassification
• Avoid bulk aqueous shipments over 50% concentration to prevent Chapter 29 note (d) exclusion issues