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O-Butyl N-Methyl-N-ethyl Phosphoramidofluoridate Salt

The protonated salt form of O-butyl N-(methyl ethyl amino) phosphoramidofluoridate, explicitly covered by HTS 2929.90.50.40 including corresponding alkylated/protonated salts. Used in ionic organophosphorus catalysis.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+131.0%137.5%
🇲🇽Mexico6.5%+103.5%110%
🇨🇦Canada6.5%+103.5%110%
🇩🇪GermanyFree+18.5%18.5%
🇯🇵JapanFree+21.0%21%

Alternative Classifications

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

2929.90Same rate: 137.5%

If other nitrogen function salts without P-F structure

Different nitrogen function compounds use preceding 10-digit statistical suffixes.

2923.20Lower: 17.5% vs 137.5%

If classified as quaternary ammonium salt

If nitrogen quaternary without phosphorus, classifies under heading 2923.

2939Lower: 19% vs 137.5%

If natural/miscellaneous nitrogen compound

Catch-all for other nitrogen heterocycles or natural products in heading 2939.

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

• Specify protonated/alkylated salt form in import documentation matching tariff language exactly

• Include counterion identification (e.g

• tetrafluoroborate) in chemical passport

• Monitor for hydrolysis—use inert atmosphere packaging for salt stability