Phenomaphos Fonofos Pesticide Standard from Canada
Certified reference standard of fonofos (O-Ethyl-S-phenylethylphosphono-thiolothionate) at 99% purity for analytical and quality control in pesticide manufacturing. As a separate chemically defined organo-sulfur compound specifically listed as a pesticide, it matches HTS 2930.90.4310 exactly.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide certificate of analysis with impurity levels <1%; declare as reference standard to avoid retail packing issues
• Pitfall: incorrect declaration as formulation leads to higher duties under 3808