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Phenylphosphonic acid

CAS 1571-33-1

Phosphonic acid, P-phenyl-

Used in 1 industrial sector tracked by the EPA.

Molecular structure of 1571-33-1
US production16.0K lb
Import volumeZero
Import dependency0%
Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2023. 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
2023
US production 16.0K lb · Imports Zero

HS customs code 293149 covers 114 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (1)
Dover Chemical

Why It Matters

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

Industrial Uses

  • •Stabilizing agent in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS1571-33-1
PubChem CIDNot recorded
DTXSIDDTXSID2044399
FormulaC6H7O3P
Mol. Weight158.093 g/mol
SMILESOP(O)(=O)C1=CC=CC=C1

Data Sources

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Brief citations

Phenylphosphonic acid (CAS 1571-33-1) https://chemicalindependence.com/chemical/1571-33-1/ EPA TSCA Inventory: CAS 1571-33-1. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 1571-33-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1571-33-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting