O-Isopropyl Methylphosphonofluoridate (IMPF) from Mexico
This compound features an isopropyl O-alkyl group (≤C10) and methyl alkyl on phosphorus with a fluoride, classified under HTS 2931.59.0010 for O-alkyl alkyl phosphonofluoridates. As a chemically defined organo-inorganic phosphorus derivative with halogen, it fits Chapter 29's scope for separate organic compounds.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Confirm isopropyl chain length ≤C10 via analytical certificate; prepare for DEA/CBP scrutiny on nerve agent precursors
• Pitfall: incomplete isomer specification leading to duty disputes
• Use UN-approved packaging for fluoridate transport