Tributylphosphine from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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