2931.59.00.35/Phosphonamidofluoridic Acid, Methyl-, Bis(diethylamino)methylene Ester/Japan

Phosphonamidofluoridic Acid, Methyl-, Bis(diethylamino)methylene Ester from Japan

CAS-listed pure compound [exact nomenclature variant] used as reagent in organophosphorus chemistry research. Classified precisely under HTS 2931.59.00.35 as the designated halogenated organo-phosphorous derivative. Excluded from mixtures or preparations per Chapter 29 notes.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Lab quantities (<100g) still require CWC declaration; bulk imports need additional ATF oversight

• Validate NMR spectrum matches reference to prevent customs laboratory challenge

• Avoid glass ampoules; use fluoropolymer-lined containers to prevent HF generation