1,4-Dioxane
CAS 123-91-1
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 293299 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 293299, which covers 229 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- United Kingdom
- Japan
- Germany
- Spain
- Israel
- Canada
- Brazil
- Vietnam
- Ukraine
- New Zealand
- Belgium
- Mexico
- Singapore
- Taiwan
- South Korea
- Sweden
- South Africa
- Egypt
- Indonesia
- Lithuania
- Finland
- Hungary
- Czech Republic
- Hong Kong
- Malaysia
- Slovakia
- Australia
- Russia
- Jordan
- Latvia
- Argentina
- Slovenia
- Malta
- Poland
- Denmark
- Austria
Why It Matters
Industrial Uses
Used in 5 sectors as 4 functional roles.
- •Solvent in Adhesive Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
- •Laboratory chemicals in All Other Basic Organic Chemical Manufacturing (20%)Processing as a reactant
- •Solvent in Paint and Coating Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
- •Laboratory chemicals in Fabricated Metal Product ManufacturingUse—non-incorporative activities
- •Solvent in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
- •Cleaning agent in Fabricated Metal Product ManufacturingUse—non-incorporative activities
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
4 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 |
|---|---|---|---|---|
| AA BLOCKS | United States | $0.05 | 500 g | 99% |
| Fluorochem UK | United Kingdom | $0.05 | 1 kg | 99% |
| Fluorochem EU | Germany | $0.05 | 1 kg | 99% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID4020533Retrieved 2026-04-06
- PubChem · compound 31275Retrieved 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
1,4-Dioxane (CAS 123-91-1) https://chemicalindependence.com/chemical/123-91-1/ EPA CompTox (DSSTox): DTXSID4020533. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4020533 PubChem: 31275. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/31275 EPA Chemical Data Reporting: 123-91-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 123-91-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293299 for CAS 123-91-1. Reporting year: 2024. https://usatrade.census.gov/