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1,1-Difluoroethane

CAS 75-37-6

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

Molecular structure of 75-37-6
US productionCBI
Import value, 2024$44M
Top sourceChina 97%

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 290343 · narrow

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

These shares come from HS customs code 290343, which covers 2 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 97%ChinaKR 1%South KoreaES 1%SpainMX 1%Mexico
Domestic parents -- activity not disclosed (2)
Chemours
Wego Chemical Group
EPA-registered importers (3)
Fci
Honeywell International (123312)
Icool Usa Incorporated

Why It Matters

Sectors
Metals & MiningPlastics & RubberConsumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 6 sectors as 6 functional roles.

  • •Refrigerants in Other (100%)Processing—repackaging
  • •Propellants, non-motive (blowing agents) in Other (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Dusting agent in Other (80%)Processing—repackaging
  • •Propellants, non-motive (blowing agents) in Plastics Product Manufacturing (5%)Processing—incorporation into article
  • •Intermediate in All Other Basic Organic Chemical Manufacturing (5%)Processing as a reactant
  • •Propellants, non-motive (blowing agents) in Wholesale and Retail Trade (80%)Processing—repackaging
  • •Propellants, non-motive (blowing agents) in All Other Chemical Product and Preparation Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Foamant in All Other Chemical Product and Preparation Manufacturing (46%)Processing—incorporation into formulation, mixture, or reaction product
  • •Propellants, non-motive (blowing agents) in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Energy Releasers (explosives, motive propellant) in All Other Chemical Product and Preparation Manufacturing (25%)Processing—incorporation into article

Chemical Identity

CAS75-37-6
PubChem CID6368
DTXSIDDTXSID0024050
FormulaC2H4F2
Mol. Weight66.05 g/mol
SMILESCC(F)F

Data Sources

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Brief citations

1,1-Difluoroethane (CAS 75-37-6) https://chemicalindependence.com/chemical/75-37-6/ EPA CompTox (DSSTox): DTXSID0024050. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0024050 PubChem: 6368. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6368 EPA Chemical Data Reporting: 75-37-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 75-37-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290343 for CAS 75-37-6. Reporting year: 2024. https://usatrade.census.gov/