5-Sulfosalicylic Acid from Germany
5-Sulfosalicylic acid (5-hydroxy-2-sulfobenzoic acid) is listed in HTS 2918.29.04.00 despite sulfonation, as a specific exception for phenolic carboxylic acids. Widely used for protein precipitation and iron testing in labs.
Duty Rate — Germany → United States
10%
Rate breakdown
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
• Declare sulfonic acid position and content; ensure solution not for specific use per note (e); common pitfall is classifying as general sulfonated in 2918.19