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O-Isopropyl Methylphosphonofluoridate (IMPF)

This compound features an isopropyl O-alkyl group (≤C10) and methyl alkyl on phosphorus with a fluoride, classified under HTS 2931.59.0010 for O-alkyl alkyl phosphonofluoridates. As a chemically defined organo-inorganic phosphorus derivative with halogen, it fits Chapter 29's scope for separate organic compounds.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+12.5%16.2%
🇲🇽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.

2931.59.00Same rate: 16.2%

If n/a - primary classification

Exact match; alternatives only for structural variants.

2903.19Higher: 18% vs 16.2%

If defluorinated to corresponding phosphonate

Halogen-free saturated acyclic mono phosphonic acids classify earlier in Chapter 29 numerical order.

3824.99Higher: 17.5% vs 16.2%

If imported as stabilized mixture with anticaking agent exceeding Chapter 29 note (f) limits

Prepared binders or chemical preparations not qualifying as pure compounds move to Chapter 38.

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

• Confirm isopropyl chain length ≤C10 via analytical certificate; prepare for DEA/CBP scrutiny on nerve agent precursors

• Pitfall: incomplete isomer specification leading to duty disputes

• Use UN-approved packaging for fluoridate transport