O-Ethyl S-Methyl Phosphorodithioate from Canada
A phosphorus-based organo-sulfur compound serving as a key building block for certain insecticides. It features a phosphorus atom bonded solely to an ethyl group with dithioate sulfur linkages, classified under HTS 2930.90.43.20 for its pesticide applications. Meets chapter notes for separate chemically defined organic compounds with limited carbon attachment.
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
• Include NMR or mass spectrometry data in documentation to confirm the phosphorus-ethyl bonding and absence of additional carbons
• Comply with TSCA pre-manufacture notification if used in US chemical production beyond pesticide scope
• Watch for reclassification risks if stabilizer additions render it suitable for non-general use per chapter note (g)