Ascorbic Acid (Vitamin C) from China
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 — China → United States
112.5%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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