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1,1-Difluoroethane (HFC-152a)

  • Aliphatic solvents
  • CAS 75-37-6
  • IUPAC: 1,1-Difluoroethane

1,1-Difluoroethane (HFC-152a) (CAS 75-37-6) appears in 1 of the 2,122 car-care products CarCareTruth tracks (as of August 2026).

1,1-Difluoroethane (HFC-152a) carries no GHS human-health hazard classification; its GHS codes (H220 flammable gas, H280 gas under pressure) are physical hazards rather than health hazards. It is not on California's Prop 65 list and is not classified as a carcinogen, asthmagen, or sensitizer. As a propellant it disperses rapidly as a gas on release.

1,1-Difluoroethane (HFC-152a) is a hydrofluorocarbon used as an aerosol propellant. It has only two carbons and two fluorines on the same carbon — it is not a per- or polyfluoroalkyl substance (PFAS) under the OECD definition. The PFAS test requires at least one fully fluorinated methyl or methylene group; HFC-152a has only a CH₃-CHF₂ structure and is excluded.

GHS classification at typical use is H220 (extremely flammable gas) and H280 (gas under pressure). It is not classified as an asthmagen, sensitizer, or carcinogen. The compound has limited atmospheric persistence (~1.4 year lifetime) and a Global Warming Potential of ~138 (vs CO₂ = 1) — significant in industrial-scale release but trivial at consumer-can quantities. Not aquatic-toxic; rapidly disperses as a gas on release.

VOC-exempt under EPA and CARB regulations as a fluorinated propellant. Used in Ozium glycol-aerosol products as a partial replacement for hydrocarbon propellant to manage flammability at the can level.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
yes
Ozone depleting
no
Microplastic
no
PFAS
no
Purpose: Hydrofluorocarbon aerosol propellant — a non-flammable propellant alternative to propane/butane in some pressurized aerosol formulas; sometimes blended with hydrocarbons to lower overall flammability

Common questions about 1,1-Difluoroethane (HFC-152a)

What is 1,1-Difluoroethane (HFC-152a) used for in car care?
Hydrofluorocarbon aerosol propellant — a non-flammable propellant alternative to propane/butane in some pressurized aerosol formulas; sometimes blended with hydrocarbons to lower overall flammability
Is 1,1-Difluoroethane (HFC-152a) a VOC?
No. 1,1-Difluoroethane (HFC-152a) is not classified as a volatile organic compound (VOC).
Is 1,1-Difluoroethane (HFC-152a) on California's Proposition 65 list?
No. 1,1-Difluoroethane (HFC-152a) is not on California's Proposition 65 list.

1 product contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.