5H-1,2-Oxathiole, 2,2-dioxide

CAS 21806-61-1

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

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. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Zero · Imports Confidential

EPA-registered importers (3)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Enchem America

Soulbrain Mi

Ultium Cells Holdings

Why It Matters

Sectors

ElectronicsCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

•Conductive agent in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Ion exchange agent in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Conductive agent in Electrical Equipment, Appliance, and Component Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS21806-61-1

PubChem CIDNot recorded

DTXSIDDTXSID10447528

FormulaC3H4O3S

Mol. Weight120.12 g/mol

SMILESO=S1(=O)OCC=C1

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

5H-1,2-Oxathiole, 2,2-dioxide (CAS 21806-61-1) https://chemicalindependence.com/chemical/21806-61-1/ EPA TSCA Inventory: CAS 21806-61-1. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 21806-61-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21806-61-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting