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O,O-Dimethyl S-Methyl Phosphorothioate from Canada

This is a specific organo-phosphorus compound used primarily as an intermediate in the synthesis of organophosphate pesticides. It contains a phosphorus atom bonded to one methyl group and no other carbon atoms, fitting precisely within HTS 2930.90.43.20 as an organo-sulfur pesticide compound. The thioate structure qualifies it under the organo-sulfur compounds heading.

Duty Rate — Canada → United States

16.5%

Rate breakdown

9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter

Import Tips

• Provide detailed chemical composition certificates and purity analysis to verify the single methyl group on phosphorus for classification compliance

• Obtain EPA registration documents if intended for pesticide use, as this affects import permits and labeling requirements

• Avoid common pitfalls like mislabeling as a general solvent; ensure packaging indicates technical grade for industrial use