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
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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