Sulfolane
U.S. production volumes are classified as confidential business information.
US ProductionCBI
Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.
Import Value$6.4B
Top SourceSingapore 36%
The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.
Where It Comes From
Customs basis: HS 293499 · basket
These shares come from HS customs code 293499, which covers 57 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.
Source Countries
Country of origin for US imports, from Census customs data (2023).
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
- Finland
- Netherlands
- Canada
- Indonesia
- Mexico
- Taiwan
- South Korea
- Austria
- Croatia
- Sweden
- Ukraine
- Denmark
- Israel
- Czech Republic
- New Zealand
- Hong Kong
- Kyrgyzstan
- Australia
- Portugal
- South Africa
- Poland
- Slovenia
- Brazil
- Slovakia
- Vietnam
- Latvia
- Malta
- Hungary
- Romania
- Kenya
- Belarus
- Russia
- Turkey
- Norway
EPA-registered manufacturers (3)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Shell · GB United Kingdom
Chevron Phillips Chemical
Shell Chemical
EPA-registered importers (7)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Sumitomo Chemical · JP Japan
Honeywell International
Org Chem Group
Solvay
Sumitomo Chemical Advanced Technologies
Show all 7
Sumitomo Seika America
Univar Solutions
Why It Matters
Sectors
EnergyElectronicsPlastics & RubberConsumer ProductsCore Chemicals
Downstream UsesNo data available
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 5 sectors as 6 functional roles.
- •Solvents (which become part of product formulation or mixture) in Petrochemical Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvents (for cleaning or degreasing) in Computer and Electronic Product Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvents (which become part of product formulation or mixture) in Computer and Electronic Product Manufacturing (25%)Processing—incorporation into formulation, mixture, or reaction product
- •Vapor pressure modifiers in All Other Basic Inorganic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Vapor pressure modifiers in Petroleum RefineriesUse—non-incorporative activities
- •Intermediate in Petroleum Refineries (100%)Processing as a reactant
- •Solvents (which become part of product formulation or mixture) in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Cleaning agent in Computer and Electronic Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Fuels and fuel additives in Petroleum Refineries (50%)Processing—incorporation into formulation, mixture, or reaction product
Vendor Pricing
$0.01/gAaron Chemicals LLC
CountryHong Kong
Pack$188.00 / 25 kg
Purity97%
Vendors26 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
25 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 | $0.01 | 25 kg | 98% |
| A2B Chem LLC | United States | $0.02 | 1 kg | 97% |
| AA BLOCKS | United States | $0.02 | 1 kg | 97% |
| BLD Pharmatech Ltd. | China | $0.03 | 1 kg | 97% |
| Ambeed, Inc. | United States | $0.03 | 1 kg | 97% |
| Fluorochem EU | Germany | $0.04 | 1 kg | 99% |
| Fluorochem UK | United Kingdom | $0.04 | 1 kg | 99% |
| BLD Pharmatech Co., Limited | United States | $0.05 | 500 g | 97% |
| BLD Pharmatech GmbH | Germany | $0.05 | 500 g | 97% |
| Angene International Limited | United States | $0.07 | 500 g | 97% |
| AK Scientific, Inc. | United States | $0.08 | 1 kg | 99% |
| ALFA AESAR | Germany | $0.09 | 5 kg | 99% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.13 | 2.5 kg | 99% |
| Sigma-Aldrich | Germany | $0.13 | 2.5 kg | 99% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 98% |
| Apollo Scientific UK | United Kingdom | $0.28 | 100 g | 99% |
| AstaTech, Inc | United States | $0.37 | 100 g | 95% |
| TargetMol Chemicals | China → United States | $26.00 | 2 g | — |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Key Organics Ltd. | United Kingdom | $1960.00 | 100 mg | 95% |
| Otava, Ltd. | Ukraine | $2280.00 | 50 mg | 95% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | 95% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| Asinex | Netherlands | $6461.40 | 100 mg | 90% |
| TimTec, LLC (back-ordered) | United States | $32000.00 | 15 mg | 94% |
Chemical Identity
CAS126-33-0
PubChem CID31347
DTXSIDDTXSID3027037
FormulaC4H8O2S
Mol. Weight120.17 g/mol
SMILESC1CCS(=O)(=O)C1
Data Sources
DTXSID30270372026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
313472026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/31347/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/31347.json
126-33-02026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 126-33-02026-04-25
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr_industrial.csv