Crotonic Acid from Germany
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 — Germany → United States
15%
Rate breakdown
9903.04.6211.3%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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