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Bis(2,4-dicumylphenoxy)pentaerythritol diphosphite

CAS 154862-43-8

Used in 2 industrial sectors tracked by the EPA.

Molecular structure of 154862-43-8
US production2.6M lb
Import value, 2024$23M
Import volumeCBI
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. 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 2.6M lb · 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
EPA-registered manufacturers (1)
Dover Chemical
Domestic parents -- activity not disclosed (1)
Icc Industries

Why It Matters

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

Industrial Uses

Used in 4 sectors as 2 functional roles.

  • •Stabilizing agent in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Other (20%)Processing—repackaging
  • •Antioxidant in Custom Compounding of Purchased Resins (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Plastics Product Manufacturing (100%)Processing—incorporation into article

Vendor Pricing

$0.16/gBLD Pharmatech Ltd.
CountryChina
Pack$160.00 / 1 kg
Purity98%
Vendors14 available

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

13 more vendors
VendorCountry$/gPackPurity
Aaron Chemicals LLCHong Kong$0.21500 g98%
Angene ChemicalChina → Hong Kong$0.24500 g98%
Combi-Blocks, Inc.United States$0.251 kg98%
A2B Chem LLCUnited States$0.29500 g98%
AA BLOCKSUnited States$0.36100 g98%
BLD Pharmatech GmbHGermany$0.40100 g98%
BLD Pharmatech Co., LimitedUnited States$0.45100 g98%
Ambeed, Inc.United States$0.45100 g98%
Sigma-Aldrich (Rush Stock)Germany$0.85100 g—
Sigma-AldrichGermany$0.85100 g—
AK Scientific, Inc.United States$0.95100 g98%
Angene International LimitedUnited States$1.82100 g98%
AngeneChina → Hong Kong$4266.6730 mg98%

Chemical Identity

CAS154862-43-8
PubChem CID164499
DTXSIDDTXSID0047119
FormulaC53H58O6P2
Mol. Weight853 g/mol
SMILESCC(C)(C1=CC=CC=C1)C2=CC(=C(C=C2)OP3OCC4(CO3)COP(OC4)OC5=C(C=C(C=C5)C(C)(C)C6=CC=CC=C6)C(C)(C)C7=CC=CC=C7)C(C)(C)C8=CC=CC=C8

Data Sources

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Brief citations

Bis(2,4-dicumylphenoxy)pentaerythritol diphosphite (CAS 154862-43-8) https://chemicalindependence.com/chemical/154862-43-8/ EPA CompTox (DSSTox): DTXSID0047119. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0047119 PubChem: 164499. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/164499 EPA Chemical Data Reporting: 154862-43-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 154862-43-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292029 for CAS 154862-43-8. Reporting year: 2024. https://usatrade.census.gov/