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1,2-Oxathiolane, 2,2-dioxide

CAS 1120-71-4

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

Molecular structure of 1120-71-4
US productionZero
Import value, 2024$6.4B
Import volumeCBI
Top sourceSingapore 36%

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 293499 · basket

EPA reports by year
2023
US production Zero · Imports Confidential

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
EPA-registered importers (3)
Enchem America
Soulbrain Mi
Ultium Cells Holdings

Why It Matters

Sectors
ElectronicsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
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

Vendor Pricing

$0.03/gAaron Chemicals LLC
CountryHong Kong
Pack$13.00 / 500 g
Purity99%
Vendors21 available

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

20 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.03500 g98%
ChemsceneUnited States$0.081 kg—
A2B Chem LLCUnited States$0.12100 g97%
Fluorochem UKUnited Kingdom$0.141 kg99%
Fluorochem EUGermany$0.141 kg99%
AA BLOCKSUnited States$0.15100 g97%
Combi-Blocks, Inc.United States$0.251 kg98%
AK Scientific SpecializedUnited States$0.25500 g95%
AK Scientific, Inc.United States$0.34500 g99%
AstaTech, IncUnited States$0.43100 g98%
Angene International LimitedUnited States$0.5850 g99%
MedChemExpress MCESweden$0.72500 g99.98%
Sigma-Aldrich (Rush Stock)Germany$0.861 kg98%
Sigma-AldrichGermany$0.861 kg98%
ALFA AESARGermany$2.09250 g99%
InterbioscreenHong Kong$51.0010 g95%
Labotest KGGermany$453.001000 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg98%
Princeton BioMolecular Research (SC)United States$18000.005 mg90%

Chemical Identity

CAS1120-71-4
PubChem CIDNot recorded
DTXSIDDTXSID8021195
FormulaC3H6O3S
Mol. Weight122.14 g/mol
SMILESO=S1(=O)CCCO1

Data Sources

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Brief citations

1,2-Oxathiolane, 2,2-dioxide (CAS 1120-71-4) https://chemicalindependence.com/chemical/1120-71-4/ EPA TSCA Inventory: CAS 1120-71-4. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 1120-71-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1120-71-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 1120-71-4. Reporting year: 2024. https://usatrade.census.gov/