Citric Acid Monohydrate USP Grade from Mexico
Citric acid monohydrate (C6H8O7·H2O) retains the core tricarboxylic acid structure with alcohol function, classified under HTS 2918.14.00.00 as the hydrated form of the pure compound. USP grade meets pharmaceutical standards for purity and is used in effervescent tablets and syrups. The water of hydration does not alter its classification per chapter notes.
Duty Rate — Mexico → United States
16%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include USP certificate of analysis; pharma imports need FDA Drug Establishment Registration and drug listing
• Label clearly as 'monohydrate' with CAS 5949-29-1; moisture content (8.8%) must match specs to prevent disputes
• Avoid bulk packaging over 25kg bags without liners; humidity exposure can cause clumping and quality claims