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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%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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