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Diphenyl isodecyl phosphite

CAS 26544-23-0

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

Molecular structure of 26544-23-0
US productionCBI
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 (2)
Dover Chemical
Proviron
Domestic parents -- activity not disclosed (3)
Baerlocher Usa
Mitsubishi International Polymertrade
Si Group
EPA-registered importers (4)
Patcham Fzc · AE United Arab Emirates
Galata Chemicals
Patcham Usa
Soyventis North America

Why It Matters

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

Industrial Uses

Used in 5 sectors as 7 functional roles.

  • •Heat stabilizer in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chemical reaction regulator in Synthetic Rubber 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
  • •Chemical reaction regulator in Plastics Material and Resin Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Stabilizing agent in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Filler in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.30/gCombi-Blocks, Inc.
CountryUnited States
Pack$150.00 / 500 g
Purity98%
Vendors6 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

5 more vendors
VendorCountry$/gPackPurity
Aaron Chemicals LLCHong Kong$8.2010 g95%
Angene ChemicalChina → Hong Kong$8.5010 g95%
AA BLOCKS (2 weeks)United States$12.7010 g95%
A2B Chem LLC (2 weeks)United States$12.8010 g95%
AngeneChina → Hong Kong$4266.6730 mg95%

Chemical Identity

CAS26544-23-0
PubChem CID9951488
DTXSIDDTXSID3027904
FormulaC22H31O3P
Mol. Weight374.5 g/mol
SMILESCC(C)CCCCCCCOP(OC1=CC=CC=C1)OC2=CC=CC=C2

Data Sources

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Brief citations

Diphenyl isodecyl phosphite (CAS 26544-23-0) https://chemicalindependence.com/chemical/26544-23-0/ EPA CompTox (DSSTox): DTXSID3027904. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3027904 PubChem: 9951488. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9951488 EPA Chemical Data Reporting: 26544-23-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 26544-23-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting