Tetrahydro-2H-pyran-2-one
CAS 542-28-9
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 293220 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 293220, which covers 151 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Mexico
- Austria
- Indonesia
- Czech Republic
- Slovakia
- Malaysia
- Israel
- Poland
- Vietnam
- Ukraine
- South Africa
- Singapore
- Russia
- Lithuania
- Hungary
- Belarus
- Brazil
- Australia
Why It Matters
Industrial Uses
Used in 2 sectors as 2 functional roles.
- •Dispersing agent in Paint and Coating ManufacturingProcessing as a reactant
- •Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
18 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 | $0.03 | 500 g | 98% |
| AA BLOCKS | United States | $0.05 | 1 kg | 95% |
| Ambeed, Inc. | United States | $0.06 | 1 kg | 98% |
| Fluorochem EU | Germany | $0.06 | 1 kg | 98% |
| Apollo Scientific US | United Kingdom | $0.07 | 1 kg | 99% |
| A2B Chem LLC | United States | $0.09 | 500 g | 98% |
| Fluorochem UK | United Kingdom | $0.11 | 100 g | 98% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 98% |
| AK Scientific, Inc. | United States | $0.30 | 500 g | 98% |
| MedChemExpress MCE | Sweden | $0.45 | 500 g | 99.98% |
| AstaTech, Inc | United States | $0.49 | 100 g | 95% |
| Angene International Limited | United States | $0.53 | 500 g | 98% |
| ALFA AESAR | Germany | $1.05 | 500 g | 98% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Molnova | China | $370.00 | 100 mg | 99% |
| 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% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID6044438Retrieved 2026-04-06
- PubChem · compound 10953Retrieved 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
Tetrahydro-2H-pyran-2-one (CAS 542-28-9) https://chemicalindependence.com/chemical/542-28-9/ EPA CompTox (DSSTox): DTXSID6044438. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6044438 PubChem: 10953. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/10953 EPA Chemical Data Reporting: 542-28-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 542-28-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293220 for CAS 542-28-9. Reporting year: 2024. https://usatrade.census.gov/