Phenylphosphinic acid, compound with hexane-1,6-diyldiamine (2:1)

CAS 5139-88-8

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

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Top sourceNo public record

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Ascend Performance Materials

Why It Matters

Sectors

Plastics & Rubber

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

•Catalyst in Plastics Material and Resin ManufacturingProcessing as a reactant

Chemical Identity

CAS5139-88-8

PubChem CID6336800

DTXSIDDTXSID2063717

FormulaC18H28N2O4P2+2

Mol. Weight398.4 g/mol

SMILESC1=CC=C(C=C1)[P+](=O)O.C1=CC=C(C=C1)[P+](=O)O.C(CCCN)CCN

Data Sources

EPA CompTox (DSSTox) · DTXSID2063717Retrieved 2026-04-06
PubChem · compound 6336800Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Phenylphosphinic acid, compound with hexane-1,6-diyldiamine (2:1) (CAS 5139-88-8) https://chemicalindependence.com/chemical/5139-88-8/ EPA CompTox (DSSTox): DTXSID2063717. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2063717 PubChem: 6336800. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6336800 EPA Chemical Data Reporting: 5139-88-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 5139-88-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting