Flag of the United StatesAmerican Chemical Independence

1-Ethyl-2-pyrrolidinone

CAS 2687-91-4

U.S. production volumes are classified as confidential business information.

Molecular structure of 2687-91-4
US productionCBI
Import value, 2024$907M
Top sourceIreland 47%

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 293379 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293379, which covers 105 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 47%IrelandBE 19%BelgiumSG 11%SingaporeIT 4%ItalyCH 4%Switzerland
EPA-registered importers (9)
Basf Se · DE Germany
Lamberti S P A · IT Italy
Basf
Kluber Lubrication North America
Kyzen
Show all 9
Lamberti Usa, Incorporated
Mak Chemicals
Stahl Usa
Wego Chemical Group

Why It Matters

Sectors
ConstructionPlastics & RubberTextilesConsumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 5 sectors as 3 functional roles.

  • •Solvent in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Chemical reaction regulator in Asphalt Paving, Roofing, and Coating Materials Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Solvent in Plastics Material and Resin ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Solvent in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into article
  • •Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$9.00 / 500 g
Purity95%
Vendors18 available

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

17 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.02500 g95%
AA BLOCKSUnited States$0.041 kg99%
A2B Chem LLCUnited States$0.04500 g96%
Ambeed, Inc.United States$0.041 kg97%
Fluorochem UKUnited Kingdom$0.0510 kg98%
MedChemExpress MCESweden$0.071 kg—
AstaTech, IncUnited States$0.07500 g95%
Apollo Scientific UKUnited Kingdom$0.1025 kg99%
AK Scientific SpecializedUnited States$0.10500 g95%
AK Scientific, Inc.United States$0.14500 g98%
Angene International LimitedUnited States$0.25500 g98%
Combi-Blocks, Inc.United States$0.251 kg97%
ALFA AESARGermany$0.90500 g98%
Sigma-Aldrich (Rush Stock)Germany$1.22500 g98%
Sigma-AldrichGermany$1.22500 g98%
TargetMol ChemicalsChina → United States$35.001 g99.86%
AngeneChina → Hong Kong$4266.6730 mg95%

Chemical Identity

CAS2687-91-4
PubChem CID17595
DTXSIDDTXSID3044413
FormulaC6H11NO
Mol. Weight113.16 g/mol
SMILESCCN1CCCC1=O

Data Sources

← Back to Dashboard← Back to Construction

Brief citations

1-Ethyl-2-pyrrolidinone (CAS 2687-91-4) https://chemicalindependence.com/chemical/2687-91-4/ EPA CompTox (DSSTox): DTXSID3044413. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3044413 PubChem: 17595. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/17595 EPA Chemical Data Reporting: 2687-91-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2687-91-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293379 for CAS 2687-91-4. Reporting year: 2024. https://usatrade.census.gov/