2-Butenoic acid

CAS 3724-65-0

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$117M

Import volume224.9K lb

Import dependency100%

Top sourceChina 50%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

2-Butenoic acid · US import value by year

2013: $123M · Peak 2021: $323M · 2024: $117M · 2025: $102M

Where It Comes From

Customs basis: HS 291619 · basket

EPA reports by year

2023: US production Zero · Imports 224.9K lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291619, which covers 169 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).

CN 50%ChinaDE 21%GermanyTW 12%TaiwanIN 7%IndiaGB 3%United Kingdom

Hungary
Spain
Japan
Belgium
Ukraine
Netherlands
Sweden
Poland
Israel
Brazil
Malaysia
Slovakia
Morocco

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.

Special Materials

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

•Monomers in All Other Basic Organic Chemical ManufacturingProcessing as a reactant

Chemical Identity

CAS3724-65-0

PubChem CID637090

DTXSIDDTXSID7027544

FormulaC4H6O2

Mol. Weight86.09 g/mol

SMILESCC=CC(=O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID7027544Retrieved 2026-04-06
PubChem · compound 637090Retrieved 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

2-Butenoic acid (CAS 3724-65-0) https://chemicalindependence.com/chemical/3724-65-0/ EPA CompTox (DSSTox): DTXSID7027544. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7027544 PubChem: 637090. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/637090 EPA Chemical Data Reporting: 3724-65-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3724-65-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291619 for CAS 3724-65-0. Reporting year: 2024. https://usatrade.census.gov/