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Cyclic Phosphinate Pesticide Precursor

This organo-phosphorus compound, specifically (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate, serves as a precursor for synthesizing cyclic phosphinate-based pesticides. It qualifies for HTS 2931.47.00.00 as a non-halogenated derivative with phosphorus directly bonded to carbon in its dioxaphosphinane ring.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+37.5%41.2%
🇲🇽Mexico3.7%+10.0%13.7%
🇨🇦Canada3.7%+10.0%13.7%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

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

2931.90.30.00Higher: 44% vs 41.2%

If used as organo-mercury compound or similar metal derivative

Other specific organo-inorganic compounds with metals classified separately within 2931.90.

3808.93Lower: 17.5% vs 41.2%

If final pesticide product rather than chemical intermediate

Herbicides containing phosphorus classified in 3808 based on pesticidal use rather than chemical structure.

2904Lower: 16.2% vs 41.2%

If for sulfonated or nitrated derivatives if modified

Halogenated/sulfonated phosphorus compounds shift to earlier headings per Chapter note on derivative priority.

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

• Submit EPA registration documents if intended for pesticide synthesis to facilitate agricultural end-use verification

• Ensure transport in Chapter 29-compliant solvent solutions (note e) without functional additives for specific applications

• Document molecular structure via NMR/IR spectra to distinguish from halogenated derivatives in 2931 earlier subheadings