Mercaptoacetic Acid Sodium Salt from China
Sodium thioglycolate, the sodium salt of thioglycolic acid, maintains classification with parent mercaptocarboxylic acid. Per Chapter 29 note 3(C)(1), inorganic salts follow organic acid heading HTS 2930.90.4920. Common in hair waving solutions.
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
• Counterion analysis confirming Na+ <15% w/w for salt classification
• Less corrosive than free acid; UN 3334 Packing Group III
• Verify pH 5-7 range prevents free acid formation during storage