Pimelic Acid from Mexico
Pimelic acid (heptanedioic acid) is a seven-carbon chain dicarboxylic acid used in polymer synthesis and pharmaceutical intermediates. Classified under HTS 2917.19.70.50 as an 'other' acyclic polycarboxylic acid per Chapter 29 requirements for chemically defined organic compounds. Its two carboxylic acid groups on an acyclic chain determine the heading.
Duty Rate — Mexico → United States
14%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include HPLC purity certificate (>98%) to confirm status as chemically defined compound
• Declare CAS 111-16-0 accurately; misdeclaration common with similar dioic acids
• Avoid plasticizers or stabilizers that could trigger Chapter 29 note (f) reclassification