Sulfolane
CAS 126-33-0
U.S. production volumes are classified as confidential business information.
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. 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 293499 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · 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.
- 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
Why It Matters
Industrial Uses
Used in 9 sectors as 4 functional roles.
- •Cleaning agent in Petrochemical Manufacturing (15%)Processing—incorporation into formulation, mixture, or reaction product
- •Processing aids, specific to petroleum production in Petrochemical Manufacturing (10%)Use—non-incorporative activities
- •Processing aids, specific to petroleum production in Computer and Electronic Product Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
- •Cleaning agent in Computer and Electronic Product Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
- •Processing aids, specific to petroleum production in All other Petroleum and Coal Products Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Petroleum Refineries (100%)Processing as a reactant
- •Intermediate in All Other Basic Inorganic Chemical Manufacturing (0%)Processing as a reactant
- •Solvent in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvent in Wholesale and Retail Trade (40%)Processing—repackaging
- •Solvent in Adhesive Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvent in Pharmaceutical and Medicine Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
Vendor Pricing
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
Data Sources
- EPA CompTox (DSSTox) · DTXSID3027037Retrieved 2026-04-06
- PubChem · compound 31347Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Sulfolane (CAS 126-33-0) https://chemicalindependence.com/chemical/126-33-0/ EPA CompTox (DSSTox): DTXSID3027037. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3027037 PubChem: 31347. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/31347 EPA Chemical Data Reporting: 126-33-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 126-33-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 126-33-0. Reporting year: 2024. https://usatrade.census.gov/