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Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite

CAS 26741-53-7

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

Molecular structure of 26741-53-7
US productionCBI
Import value, 2024$23M
Top sourceSingapore 52%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 292029 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 292029, which covers 28 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 52%SingaporeTW 12%TaiwanIT 9%ItalyGB 7%United KingdomES 7%Spain
Domestic parents -- activity not disclosed (1)
Si Group
EPA-registered importers (5)
Basf Se · DE Germany
Songwon Industrial · KR South Korea
Basf
Mayzo
Songwon

Why It Matters

Sectors
ConstructionPlastics & RubberTextiles
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 4 sectors as 3 functional roles.

  • •Antioxidant in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Synthetic Rubber Manufacturing (10%)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
  • •Chemical reaction regulator in Plastics Material and Resin 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 reaction regulator in Synthetic Rubber Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Textiles, apparel, and leather manufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.07/gAngene Chemical
CountryChina (registered: Hong Kong)
Pack$37.00 / 500 g
Purity98%
Vendors17 available

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

16 more vendors
VendorCountry$/gPackPurity
Aaron Chemicals LLCHong Kong$0.07500 g98%
A2B Chem LLCUnited States$0.101 kg97%
AA BLOCKSUnited States$0.121 kg97%
ChemsceneUnited States$0.141 kg—
BLD Pharmatech GmbHGermany$0.141 kg97%
BLD Pharmatech Ltd.China$0.141 kg97%
AK Scientific SpecializedUnited States$0.141 kg95%
Ambeed, Inc.United States$0.151 kg97%
MedChemExpress MCESweden$0.171 kg—
BLD Pharmatech Co., LimitedUnited States$0.17500 g97%
AK Scientific, Inc.United States$0.181 kg97%
Fluorochem EUGermany$0.19100 g97%
Combi-Blocks, Inc.United States$0.251 kg97%
AstaTech, IncUnited States$4.4010 g97%
Angene International LimitedUnited States$21.405 g98%
AngeneChina → Hong Kong$4266.6730 mg98%

Chemical Identity

CAS26741-53-7
PubChem CID93101
DTXSIDDTXSID2027911
FormulaC33H50O6P2
Mol. Weight604.7 g/mol
SMILESCC(C)(C)C1=CC(=C(C=C1)OP2OCC3(CO2)COP(OC3)OC4=C(C=C(C=C4)C(C)(C)C)C(C)(C)C)C(C)(C)C

Data Sources

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Brief citations

Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite (CAS 26741-53-7) https://chemicalindependence.com/chemical/26741-53-7/ EPA CompTox (DSSTox): DTXSID2027911. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2027911 PubChem: 93101. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/93101 EPA Chemical Data Reporting: 26741-53-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 26741-53-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292029 for CAS 26741-53-7. Reporting year: 2024. https://usatrade.census.gov/