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%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include salt formation verification via titration analysis
• Specify phosphorus content for flame retardant performance claims
• Ensure moisture-proof packaging to prevent hydrolysis