Thioglycolic Acid (Mercaptoacetic Acid) from China
Thioglycolic acid (HSCH₂COOH), also known as mercaptoacetic acid, is the prototypical organo-sulfur carboxylic acid classified under HTS 2930.90.4950. Features direct sulfur-carbon bonding meeting heading 2930 criteria; excluded from Chapter 32 coloring matters. Widely used in hair permanents, metal polishing, and chemical synthesis.
Duty Rate — China → United States
29.2%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include odorant/emetic documentation if added for safety per Chapter 29(g)
• Certify <0.1% heavy metals content for cosmetic/pharma grade imports
• Segregate 70% aqueous vs pure forms; different documentation requirements