Ethyl t-butyl ether

CAS 637-92-3

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, 2024$117M

Top sourceIndia 29%

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. 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 290919 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290919, which covers 93 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IN 29%IndiaCN 25%ChinaJP 20%JapanBR 6%BrazilDE 4%Germany

South Korea
Singapore
Spain
United Arab Emirates
Netherlands
Belgium
Indonesia
Poland
Mexico
Taiwan
Slovakia

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Lyondell Chemical

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Shell Petroleum

Tartan Oil

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Total Specialties Usa

Why It Matters

Sectors

EnergyConsumer ProductsCore Chemicals

Downstream UsesNot recorded

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 4 sectors as 2 functional roles.

•Fuel agents in Petroleum Refineries (100%)Processing as a reactant
•Fuel agents in Petrochemical Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel agents in Wholesale and Retail Trade (100%)Use—non-incorporative activities
•Fuel in Wholesale and Retail Trade (0%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in All other Petroleum and Coal Products ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$9.48/gAstaTech, Inc

CountryUnited States

Pack$237.00 / 25 g

Purity97%

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich (Rush Stock)	Germany	$10.13	25 g	99%
Sigma-Aldrich	Germany	$10.13	25 g	99%
A2B Chem LLC	United States	$20.40	5 g	—
AA BLOCKS	United States	$22.20	5 g	97%
Angene International Limited	United States	$37.80	5 g	97%
Aaron Chemicals LLC	Hong Kong	$264.00	250 mg	—
Angene Chemical	China → Hong Kong	$272.00	250 mg	—

Chemical Identity

CAS637-92-3

PubChem CID12512

DTXSIDDTXSID0025604

FormulaC6H14O

Mol. Weight102.17 g/mol

SMILESCCOC(C)(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID0025604Retrieved 2026-04-06
PubChem · compound 12512Retrieved 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

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Brief citations

Ethyl t-butyl ether (CAS 637-92-3) https://chemicalindependence.com/chemical/637-92-3/ EPA CompTox (DSSTox): DTXSID0025604. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0025604 PubChem: 12512. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/12512 EPA Chemical Data Reporting: 637-92-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 637-92-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290919 for CAS 637-92-3. Reporting year: 2024. https://usatrade.census.gov/