Christmas Island Phosphate Rock from Canada
Raw, unground phosphate rock from Christmas Island guano deposits, high in P2O5. HTS 2510.10.00.00 applies to this natural calcium phosphate in lump form for phosphate chemical industry.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Document guano-derived origin but confirm >70% phosphate to avoid mineral mixtures
• Use heavy-duty bulk bags to maintain lump integrity during ocean freight
• Pre-clear with CBP on radioactivity if from certain island deposits