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Sodium phenylphosphinate

CAS 4297-95-4

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

Molecular structure of 4297-95-4
1 Na⁺
US productionCBI
Import value, 2024$598M
Top sourceChina 89%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293149 · basket

EPA reports by year
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293149, which covers 114 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 89%ChinaIN 4%IndiaCA 3%CanadaDE 2%GermanyAR 1%Argentina
EPA-registered manufacturers (1)
Special Materials

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 2 functional roles.

  • •UV stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Heat stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS4297-95-4
PubChem CID6364990
DTXSIDDTXSID4063402
FormulaC6H5NaO2P+
Mol. Weight163.07 g/mol
SMILESC1=CC=C(C=C1)[P+](=O)[O-].[Na+]

Data Sources

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Brief citations

Sodium phenylphosphinate (CAS 4297-95-4) https://chemicalindependence.com/chemical/4297-95-4/ EPA CompTox (DSSTox): DTXSID4063402. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4063402 PubChem: 6364990. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6364990 EPA Chemical Data Reporting: 4297-95-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 4297-95-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293149 for CAS 4297-95-4. Reporting year: 2024. https://usatrade.census.gov/