Diphenylamine Phosphate Salt from Canada
The phosphate salt of diphenylamine is classified under HTS 2921.44.70.00 per chapter note on salts of organic bases. Used as a flame retardant additive in polymers.
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
• Include salt formation verification via titration analysis
• Specify phosphorus content for flame retardant performance claims
• Ensure moisture-proof packaging to prevent hydrolysis