Tributylphosphine from Japan

Tributylphosphine is a non-halogenated organophosphorus compound with the formula P(C4H9)3, containing phosphorus directly bonded to carbon atoms. It falls under HTS 2931.49.0080 as an organo-inorganic compound that is a non-halogenated organo-phosphorus derivative not elsewhere specified. Used primarily as a ligand in organometallic catalysis and in organic synthesis.

Duty Rate — Japan → United States

15%

Rate breakdown

9903.04.6211.3%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate

9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)

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Import Tips

• Provide detailed chemical analysis (NMR, mass spec) confirming P-C bonds and absence of halogens to justify Chapter 29 classification

• Include Safety Data Sheets (SDS) and CAS number (998-40-3) on commercial invoice for CBP verification

• Ensure proper UN packaging for flammable liquids (Class 4.2/4.3) to avoid delays