Phosphine, trioctyl-

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

Molecular structure of 4731-53-7
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
HealthElectronics
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • Catalyst in Pharmaceutical and Medicine Manufacturing (88%)Processing as a reactant
  • Catalyst in Computer and Electronic Product Manufacturing (12%)Processing as a reactant

Chemical Identity

CAS4731-53-7
PubChem CID20851
DTXSIDDTXSID9063582
FormulaC24H51P
Mol. Weight370.6 g/mol
SMILESCCCCCCCCP(CCCCCCCC)CCCCCCCC

Data Sources

DTXSID90635822026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

208512026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/20851/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/20851.json

4731-53-72026-04-24

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

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

CAS 4731-53-72026-04-25

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

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