n-Butyl-(Dipropylamino)butylidene Phosphonamidic Fluoride Hydrochloride

The protonated hydrochloride salt of a C4 phosphonamidic fluoride with di-n-propylamino functionality, all chains ≤C10, qualifying under HTS 2931.59.0030 which explicitly includes alkylated/protonated salts. These salts improve handling stability for transport in pharmaceutical synthesis. Exact structural match to the subheading's chemical definition.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+10.0%13.7%
🇲🇽Mexico3.7%+10.0%13.7%
🇨🇦Canada3.7%+10.0%13.7%
🇩🇪Germany3.7%+10.0%13.7%
🇯🇵Japan3.7%+10.0%13.7%

Alternative Classifications

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

2931.59.00Same rate: 13.7%

If protonation on nitrogen rather than specified oxygen

Different protonation sites may classify as other halogenated derivatives

2924.29Higher: 16.5% vs 13.7%

If primarily classified as carboxamide derivative

Compounds with dominant amide function fall under nitrogen-function carboxylic acid derivatives

2942.00Same rate: 13.7%

If containing both sugar and phosphorous moieties

Sugar-phosphorous compounds classify under heading 2942 per chapter notes

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Import Tips & Compliance

Salt form requires counterion specification in technical documentation; mismatch can cause reclassification

DOT hazardous material declaration mandatory - typically Class 6.1 toxic substance

Related Products under HTS 2931.59.00.30

Isopropyl-(Diethylamino)propylidene Phosphonamidic Fluoride

A fluorinated phosphonamidic compound with isopropyl P-substituent (C3), N-(1-(diethylamino)propylidene), fitting precisely within HTS 2931.59.0030 structural requirements (all groups ≤C10 alkyl/cycloalkyl). Used as a reagent in organophosphorus synthesis for potential pesticide intermediates. The fluoride and specific phosphonamidate structure dictate classification here.

Cyclohexyl-Methyl-(Dimethylamino)ethylidene Phosphonamidic Fluoride

This is a specific halogenated organo-phosphorus compound featuring a cyclohexyl (C6 cycloalkyl) group on phosphorus, N-(1-(dimethylamino)ethylidene) functionality, and fluoride, with all alkyl chains ≤C10. It falls under HTS 2931.59.0030 as a P-alkyl N-(dialkylaminoalkylidene) phosphonamidic fluoride matching the exact chemical structure defined in the subheading. These compounds are typically used as synthetic intermediates in pharmaceutical or agrochemical production.

tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride

Fluorophosphonamidate featuring tert-butyl (C4) on P and mixed methyl/n-propyl on nitrogen, all ≤C10, precisely matching HTS 2931.59.0030 criteria. Serves as building block for nerve agent analogs or therapeutic phosphonates in medicinal chemistry. The specific P-N=alkylidene-fluoride motif defines classification.

Cyclopentyl-(Dibutylamino)propylidene Phosphonamidic Fluoride Methyl Salt

Alkylated salt form of cyclopentyl-derived phosphonamidic fluoride with dibutylamino group (C4 chains), fitting HTS 2931.59.0030 inclusion of corresponding salts. Used in asymmetric synthesis where chirality at phosphorus is critical. Chapter notes confirm salts classified with parent fluoride.