Triple Superphosphate Fertilizer from Canada
Triple superphosphate (TSP) is a highly concentrated phosphatic fertilizer containing 46% P2O5, produced by reacting phosphate rock with phosphoric acid. It falls under HTS 3103.90.01.00 as a superphosphate (triple) which is specifically listed under heading 3103 for mineral or chemical phosphatic fertilizers not put up in retail packaging.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Verify phosphorus content via lab analysis to confirm classification under superphosphates; ensure certificate of analysis accompanies shipment
• Check for fluorine content limits if blended; pure TSP typically complies but document anhydrous weight basis calculations
• Obtain phytosanitary certificates if required by destination country for agricultural fertilizers to avoid customs delays