Pharmaceutical Citric Acid Anhydrous BP from Mexico
BP-grade anhydrous citric acid for pharmaceutical applications is classified under HTS 2918.14.00.00 due to its pure tricarboxylic acid with alcohol function. Used as buffering agent in injectables, effervescent formulations, and vitamin C production. British Pharmacopoeia standards confirm its status as a separate chemically defined compound.
Duty Rate — Mexico → United States
16%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit FDA Type II DMF if US pharma end-use; include BP monograph compliance certificate
• Heavy metal limits (<1ppm) critical—test and document to prevent CBP holds
• Package in HDPE drums with desiccants; declare EP/BP/USP equivalence on entry docs