o-Nitroaniline-p-sulfonic acid, sodium salt from Germany
The sodium salt of o-nitroaniline-p-sulfonic acid (4-amino-2-nitrobenzenesulfonic acid sodium salt) is specifically named in HTS 2921.42.36.00. Essential for direct dye synthesis.
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
• Molecular formula confirmation C6H5N2O5SNa required for exact HTS match
• Light-sensitive; packaging must prevent degradation affecting purity specs
• Common misclassification as 3204 dye product; remains chemical intermediate