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O,O-Diethyl S-Methyl Phosphorothiolate

This compound is a phosphorothiolate derivative used in pesticide synthesis, with phosphorus bonded to an ethyl group and sulfur functionalities. Classified in HTS 2930.90.43.20 due to its organo-sulfur pesticide nature and strict phosphorus alkyl limitation. Adheres to chapter note for chemically defined organic compounds.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+37.5%44%
🇲🇽Mexico6.5%+10.0%16.5%
🇨🇦Canada6.5%+10.0%16.5%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2931Lower: 16.2% vs 44%

If emphasizing organo-inorganic phosphorus over sulfur

Chapter 2931 covers other organo-inorganic compounds if sulfur not principal characteristic.

3808.93.50Lower: 42.5% vs 44%

If herbicides or similar formulated from this compound

End-use as formulated herbicide moves to specific pesticide headings in 3808.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Provide CoA (Certificate of Analysis) confirming structural formula matches the HTS phosphorus restriction

• Register with FIFRA for pesticide chemicals to expedite customs clearance

Related Products under HTS 2930.90.43.20