Fonofos Insecticide Active Ingredient Concentrate from Mexico
Concentrated form of O-Ethyl-S-phenylethylphosphono-thiolothionate (fonofos) at 95% purity, used for downstream formulation into crop protection products. This organo-sulfur compound is specifically named in HTS 2930.90.4310 under pesticides, as a separate chemically defined organic compound per chapter 29 scope.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit prior EPA import notice via e-submission system; include CAS number 944-22-9 on all docs
• Common pitfall: failing to declare exact isomer purity, leading to reclassification