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Ascorbic Acid (Vitamin C) from Mexico

Ascorbic acid is a water-soluble vitamin classified as an aromatic lactone under HTS 2932.20.3000 due to its heterocyclic structure with oxygen hetero-atom in a lactone ring. It meets the criteria in additional U.S. note 3 to section VI for specific organic compounds.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Verify purity certificate (typically 99%+ for pharmaceutical grade) to confirm classification under note 3,Include chemical analysis documentation proving lactone structure for customs verification,Avoid misclassification as food additive under Chapter 21; provide structural formula