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Pentaerythritol bis(phenyl phosphite)

CAS 144-35-4

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

Molecular structure of 144-35-4
US productionCBI
Top sourceNo public record

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.

Where It Comes From

EPA reports by year
2019
US production Confidential · Imports Confidential
EPA-registered manufacturers (1)
Si Group Usa (Usaa)

Why It Matters

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

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •UV stabilizer in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS144-35-4
PubChem CID67245
DTXSIDDTXSID3027114
FormulaC17H18O6P2
Mol. Weight380.27 g/mol
SMILESC1C2(COP(O1)OC3=CC=CC=C3)COP(OC2)OC4=CC=CC=C4

Data Sources

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Brief citations

Pentaerythritol bis(phenyl phosphite) (CAS 144-35-4) https://chemicalindependence.com/chemical/144-35-4/ EPA CompTox (DSSTox): DTXSID3027114. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3027114 PubChem: 67245. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/67245 EPA Chemical Data Reporting: 144-35-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 144-35-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting