Butene

CAS 25167-67-3

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$404M

Top sourceCanada 90%

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 271114, 271129 · basket

EPA reports by year

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

These shares come from HS customs code 271114, 271129, which covers 115 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).

CA 90%CanadaCL 4%ChileMX 1%MexicoKR 1%South Korea

Italy
China
United Kingdom
Czech Republic
Poland
Guyana
United Arab Emirates
Turkey
Germany
Ireland
Netherlands
Belgium
Japan
Trinidad and Tobago
Austria

EPA-registered manufacturers (6)

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

Shell Plc · GB United Kingdom

Deer Park Refining

Shell Petroleum

Trafigura Commodities Marketing

Trafigura Trading

Show all 6

True Oil

Domestic parents -- activity not disclosed (3)

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

Arlanxeo Usa Llc-Hq

ExxonMobil

Lyondell Chemical

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.

Exxonmobil Product Solutions, A Div Of Exxon Mobil

Why It Matters

Sectors

AgricultureEnergyPlastics & RubberConsumer 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 5 sectors as 5 functional roles.

•Intermediate in Petrochemical Manufacturing (100%)Processing as a reactant
•Intermediate in Petroleum Refineries (99%)Processing as a reactant
•Fuel agents in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Synthetic Rubber Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in Wholesale and Retail Trade (100%)Processing—incorporation into formulation, mixture, or reaction product
•Abrasives in Agriculture, Forestry, Fishing and Hunting (50%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in Petroleum Refineries (80%)Processing as a reactant
•Monomers in Petrochemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.30/gA2B Chem LLC (1 week)

CountryUnited States

Pack$148.00 / 500 g

PurityNot recorded

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (1 week)	United States	$0.30	500 g	—
Sigma-Aldrich (Rush Stock)	Germany	$0.70	400 g	99%
Sigma-Aldrich	Germany	$0.70	400 g	99%
Labotest KG	Germany	$453.00	1000 mg	90%

Chemical Identity

CAS25167-67-3

PubChem CID7844

DTXSIDDTXSID0027850

FormulaC4H8

Mol. Weight56.11 g/mol

SMILESCCC=C

Data Sources

EPA CompTox (DSSTox) · DTXSID0027850Retrieved 2026-04-06
PubChem · compound 7844Retrieved 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

← Back to Dashboard ← Back to Agriculture

Brief citations

Butene (CAS 25167-67-3) https://chemicalindependence.com/chemical/25167-67-3/ EPA CompTox (DSSTox): DTXSID0027850. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0027850 PubChem: 7844. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7844 EPA Chemical Data Reporting: 25167-67-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 25167-67-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 271114,271129 for CAS 25167-67-3. Reporting year: 2024. https://usatrade.census.gov/