gamma-Butyrolactone

CAS 96-48-0

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

Molecular structure of 96-48-0
US productionCBI
Import value, 2024$6.4B
Top sourceJapan 31%

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 293220, 382499 · basket

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

These shares come from HS customs code 293220, 382499, which covers 356 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
JP 31%JapanKR 26%South KoreaDE 8%GermanyCN 6%ChinaCA 6%Canada
EPA-registered manufacturers (4)
Basf Se · DE Germany
Ashland
Basf
Lyondell Chemical
Domestic parents -- activity not disclosed (2)
Aceto Us
Brenntag
EPA-registered importers (5)
Huttenes Gmbh & · DE Germany
Greenchem Industries
Ha International
Roland Dga
Samsung Austin Semiconductor

Why It Matters

Sectors
ElectronicsConstructionMetals & MiningConsumer ProductsPaints & CoatingsPaper & PrintingCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 8 sectors as 5 functional roles.

  • •Hardener in Fabricated Metal Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
  • •Solvent in Miscellaneous Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Photographic Film, Paper, Plate, and Chemical Manufacturing (100%)Processing as a reactant
  • •Drier in Computer and Electronic Product Manufacturing (100%)Processing as a reactant
  • •Solvent in Paint and Coating Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •Solvent in Photographic Film, Paper, Plate, and Chemical Manufacturing (0%)Processing—incorporation into article
  • •Solvent in Adhesive ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Fabricated Metal Product Manufacturing (100%)Processing as a reactant
  • •Intermediate in Petrochemical ManufacturingProcessing as a reactant
  • •Cleaning agent in Computer and Electronic Product Manufacturing (1%)Use—non-incorporative activities

Chemical Identity

CAS96-48-0
PubChem CID7302
DTXSIDDTXSID6020224
FormulaC4H6O2
Mol. Weight86.09 g/mol
SMILESC1CC(=O)OC1

Data Sources

Brief citations

gamma-Butyrolactone (CAS 96-48-0) https://chemicalindependence.com/chemical/96-48-0/ EPA CompTox (DSSTox): DTXSID6020224. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6020224 PubChem: 7302. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7302 EPA Chemical Data Reporting: 96-48-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 96-48-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293220,382499 for CAS 96-48-0. Reporting year: 2024. https://usatrade.census.gov/