1,4-Diaminobenzene-2-Sulfonic Acid from Canada
Also known as 4-amino-2-aminobenzenesulfonic acid, this aromatic diamine with a sulfonic acid substituent is specifically named in HTS 2921.59.1700. It serves as a key building block for azo dyes and pharmaceutical intermediates.
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
• Include detailed spectral analysis (NMR, IR) in documentation to distinguish from similar aniline derivatives
• Check for REACH-like compliance; provide safety data sheets highlighting amine and sulfonic acid hazards