Triammonium Phosphate Crystals from Canada
Pure triammonium phosphate (NH4)3PO4 in crystalline form, a chemically defined inorganic salt used as a flame retardant and in chemical synthesis. It falls under HTS 2835.29.20.00 as a phosphate of triammonium, distinct from other ammonium phosphates like mono- or diammonium. This subheading covers specifically triammonium salts within the phosphates category of Chapter 28.
Duty Rate — Canada → United States
11.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify chemical purity and provide Certificate of Analysis (CoA) confirming triammonium composition to avoid reclassification as other ammonium phosphates
• Ensure SDS and proper hazardous material labeling if shipped in quantities exceeding exempt thresholds; triammonium phosphate can be irritant