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4,4'-Dichlorodiphenyl sulfone

CAS 80-07-9

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

Molecular structure of 80-07-9
US productionCBI
Import value, 2024$760M
Top sourceChina 33%

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 293090 · basket

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

These shares come from HS customs code 293090, which covers 418 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India
EPA-registered manufacturers (2)
Syensqo Sa · BE Belgium
Solvay
Domestic parents -- activity not disclosed (1)
Aurorium
EPA-registered importers (1)
Syensqo Sa · BE Belgium

Why It Matters

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

Industrial Uses

  • •Monomers in Plastics Material and Resin Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$8.00 / 500 g
Purity98%
Vendors26 available

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

25 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.02500 g98%
A2B Chem LLCUnited States$0.041 kg98%
AA BLOCKSUnited States$0.051 kg98%
ChemsceneUnited States$0.051 kg—
BLD Pharmatech Co., LimitedUnited States$0.061 kg98%
BLD Pharmatech GmbHGermany$0.061 kg98%
BLD Pharmatech Ltd.China$0.061 kg98%
Ambeed, Inc.United States$0.061 kg98%
Fluorochem EUGermany$0.07500 g98%
AK Scientific SpecializedUnited States$0.10500 g97%
Fluorochem UKUnited Kingdom$0.10100 g98%
AK Scientific, Inc.United States$0.15500 g99%
Combi-Blocks, Inc.United States$0.251 kg98%
Apollo Scientific USUnited Kingdom$0.27500 g99%
Sigma-Aldrich (Rush Stock)Germany$0.29500 g98%
Sigma-AldrichGermany$0.29500 g98%
Angene International LimitedUnited States$0.31500 g99%
AstaTech (2 weeks)United States$0.99100 g95%
Vitas M Chemical LimitedHong Kong$81.605 g90%
Labotest KGGermany$217.805000 mg90%
SpecsNetherlands$1694.0020 mg90%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
ChemDiv, Inc.United States$4875.0080 mg90%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS80-07-9
PubChem CID6625
DTXSIDDTXSID9024986
FormulaC12H8Cl2O2S
Mol. Weight287.2 g/mol
SMILESC1=CC(=CC=C1S(=O)(=O)C2=CC=C(C=C2)Cl)Cl

Data Sources

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Brief citations

4,4'-Dichlorodiphenyl sulfone (CAS 80-07-9) https://chemicalindependence.com/chemical/80-07-9/ EPA CompTox (DSSTox): DTXSID9024986. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9024986 PubChem: 6625. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6625 EPA Chemical Data Reporting: 80-07-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 80-07-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 80-07-9. Reporting year: 2024. https://usatrade.census.gov/