o-Nitroaniline-p-sulfonic acid, sodium salt from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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