5,5'-Oxybis(2-benzofuran-1,3-dione)
CAS 1823-59-2
EPA’s 2023 records show zero U.S. production of this chemical.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction 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 291899 · basket
- 2023
- US production Zero · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 291899, which covers 139 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Austria
- Hungary
- South Korea
- Taiwan
- Czech Republic
- Mexico
- Spain
- Ukraine
- Estonia
- Australia
- Israel
- Singapore
- Slovakia
- Russia
Why It Matters
Industrial Uses
- •Intermediate in Plastics Material and Resin ManufacturingProcessing as a reactant
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
21 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.20 | 500 g | 95% |
| A2B Chem LLC | United States | $0.31 | 500 g | 98% |
| AA BLOCKS | United States | $0.33 | 100 g | 98% |
| Combi-Blocks, Inc. | United States | $0.35 | 1 kg | 98% |
| BLD Pharmatech GmbH | Germany | $0.37 | 1 kg | 97% |
| BLD Pharmatech Ltd. | China | $0.37 | 1 kg | 97% |
| Chemscene | United States | $0.40 | 1 kg | — |
| Ambeed, Inc. | United States | $0.41 | 1 kg | 97% |
| Fluorochem EU | Germany | $0.44 | 100 g | 98% |
| AK Scientific Specialized | United States | $0.44 | 500 g | 95% |
| Fluorochem UK | United Kingdom | $0.44 | 100 g | 98% |
| BLD Pharmatech Co., Limited | United States | $0.50 | 100 g | 97% |
| AK Scientific, Inc. | United States | $0.59 | 500 g | 98% |
| MedChemExpress MCE | Sweden | $0.59 | 1 kg | 99.84% |
| Synthonix | United States | $0.60 | 100 g | 97% |
| Angene International Limited | United States | $0.74 | 500 g | 95% |
| AstaTech (2 weeks) | United States | $8.00 | 5 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $13.97 | 25 g | 97% |
| Sigma-Aldrich | Germany | $13.97 | 25 g | 97% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 95% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID1044859Retrieved 2026-04-06
- PubChem · compound 74574Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
5,5'-Oxybis(2-benzofuran-1,3-dione) (CAS 1823-59-2) https://chemicalindependence.com/chemical/1823-59-2/ EPA CompTox (DSSTox): DTXSID1044859. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1044859 PubChem: 74574. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/74574 EPA Chemical Data Reporting: 1823-59-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1823-59-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291899 for CAS 1823-59-2. Reporting year: 2024. https://usatrade.census.gov/