Triple Superphosphate 46% P2O5 Fertilizer from Canada
Triple superphosphate (TSP) is a high-phosphorus fertilizer containing 46% P2O5 by weight, produced by reacting phosphate rock with phosphoric acid. It falls under HTS 3103.11.00.00 as a superphosphate with 35% or more diphosphorus pentaoxide, specifically the triple grade variant. Used primarily for root development in crops like corn and soybeans.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Verify P2O5 content through lab analysis to confirm classification under 3103.11.00.00 (≥35%) vs lower grades in 3103.10
• Obtain fertilizer registration certificates from USDA/APHIS and ensure proper labeling of nutrient content per EPA FIFRA regulations
• Avoid common pitfalls like misdeclaring as blended fertilizer, which could shift to 3105 if packaged for retail