Tributylphosphine
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3.7% | — | 3.7% |
| 🇲🇽Mexico | 3.7% | — | 3.7% |
| 🇨🇦Canada | 3.7% | — | 3.7% |
| 🇩🇪Germany | 3.7% | — | 3.7% |
| 🇯🇵Japan | 3.7% | — | 3.7% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If contains halogen substituents on phosphorus or carbon chains
Halogenated organo-phosphorus compounds shift to the halogenated organo-inorganic compounds heading.
If imported as a phosphonate ester rather than phosphine
Heterocyclic compounds with phosphorus in ring structure or phosphonate esters classify under Chapter 2933.
If for alcohol phosphites without direct P-C bonding
Compounds with P-O-C linkages rather than P-C bonds fall under Chapter 29 heading 2909 for phosphites.
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Import Tips & Compliance
• 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
Related Products under HTS 2931.49.00.80
Triphenylphosphine
Triphenylphosphine (PPh3) is a widely used organophosphorus ligand featuring three direct P-C bonds to phenyl groups. Classified under HTS 2931.49.0080 as a non-halogenated organo-phosphorus derivative. Essential in Wittig reactions, palladium catalysis, and polymer chemistry.
Tris(trimethylsilyl)phosphine
Tris(trimethylsilyl)phosphine [(Me3Si)3P] contains three direct P-Si-C linkages through silicon, qualifying as organo-inorganic with phosphorus-carbon connectivity via heteroatoms. Falls under HTS 2931.49.0080 as non-halogenated organo-phosphorus derivative. Used in low-valent phosphorus chemistry and semiconductor precursors.
Diphenylphosphane Borane Complex
This stable complex (Ph2PH·BH3) features direct P-C bonds and P-B coordination, qualifying as organo-inorganic under Chapter 29. Classified HTS 2931.49.0080 as non-halogenated organo-phosphorus derivative. Used for hydrophosphination and as phosphine transfer reagent.
Ethyl Diphenylphosphinate
Ethyl diphenylphosphinate (Ph2P(O)OEt) contains two direct P-C bonds to phenyl groups, classifying as non-halogenated organo-phosphorus derivative under HTS 2931.49.0080. Used as flame retardant intermediate and oxidation reagent.
Dichlorophosphine (Pure)
Dichlorophosphine (HPCl2) is a non-halogenated organo-phosphorus compound despite chlorine on phosphorus, as classification follows Chapter Note excluding only C-halogen/P-halogen derivatives. HTS 2931.49.0080 for other non-halogenated derivatives. Reactive intermediate for phosphine synthesis.
Cyclohexylphenylphosphine
Cyclohexylphenylphosphine (C6H11)P(C6H5) features two distinct P-C bonds, qualifying under non-halogenated organo-phosphorus derivatives HTS 2931.49.0080. Chiral ligand for asymmetric catalysis.