Rock Phosphate Heat-Treated Fertilizer from Mexico
Florida or Tennessee rock phosphate further heat-processed beyond impurity removal for agricultural use. HTS 3103.90.01.00 applies per note 3(a)(ii) for calcined natural phosphates converted to fertilizers.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Citizenship of origin documentation critical due to historical phosphate trade restrictions
• Heavy metal content testing (Cd, U) required by many destinations; provide assay reports
• Dust suppression measures needed during loading to meet IMDG stowage requirements