o-Phenylenediamine Dihydrochloride from Canada
The dihydrochloride salt of o-phenylenediamine used in pharmaceutical synthesis and analytical reagents. Although base form is named, chapter notes place salts with the parent aromatic polyamine in HTS 2921.51.10.00.
Duty Rate — Canada → United States
16.5%
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
• Confirm stoichiometric HCl content to validate salt classification
• Include water content analysis as salts are hygroscopic
• Segregate from strong oxidizers per DOT hazardous material regulations