2-Butene

CAS 107-01-7

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$286K

Import volumeZero

Top sourceSouth Korea 61%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290123 · narrow

EPA reports by year

2019: US production Confidential · Imports Zero

These shares come from HS customs code 290123, which covers 5 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).

KR 61%South KoreaCN 39%China

EPA-registered manufacturers (2)

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

Basf Se · DE Germany

Basf

Why It Matters

Sectors

Core 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

•Intermediate in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant

Chemical Identity

CAS107-01-7

PubChem CID12220

DTXSIDDTXSID1026748

FormulaC4H8

Mol. Weight56.11 g/mol

SMILESCC=CC

Data Sources

EPA CompTox (DSSTox) · DTXSID1026748Retrieved 2026-04-06
PubChem · compound 12220Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

2-Butene (CAS 107-01-7) https://chemicalindependence.com/chemical/107-01-7/ EPA CompTox (DSSTox): DTXSID1026748. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1026748 PubChem: 12220. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/12220 EPA Chemical Data Reporting: 107-01-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 107-01-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290123 for CAS 107-01-7. Reporting year: 2024. https://usatrade.census.gov/