Mercaptoacetic Acid Sodium Salt from Germany
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 — Germany → United States
20.8%
Rate breakdown
9903.04.6210.8%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 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