Tributylphosphine

U.S. production volumes are classified as confidential business information.

Molecular structure of 998-40-3
US ProductionCBI
Import Value$598M
Top SourceChina 89%

The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.

Where It Comes From

Customs basis: HS 293149 · basket

These shares come from HS customs code 293149, which covers 52 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
CN 89%ChinaIN 4%IndiaCA 3%CanadaDE 2%GermanyAR 1%Argentina
EPA-registered importers (1)
Solvay

Why It Matters

Sectors
TransportationCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • Catalyst in All Other Basic Organic Chemical Manufacturing (82%)Use—non-incorporative activities
  • Catalyst in Transportation Equipment Manufacturing (18%)Use—non-incorporative activities

Chemical Identity

CAS998-40-3
PubChem CID13831
DTXSIDDTXSID9046998
FormulaC12H27P
Mol. Weight202.32 g/mol
SMILESCCCCP(CCCC)CCCC

Data Sources

DTXSID90469982026-04-06

https://doi.org/10.23645/epacomptox.5588566

Archive: data/sources/comptox/dsstox_identifiers.csv

138312026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/13831/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/13831.json

998-40-32026-04-24

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr.csv

CAS 998-40-32026-04-25

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr_industrial.csv