1,2-Dichloro-1,1-difluoroethane

1,2-Dichloro-1,1-difluoroethane (also R-132b or HCFC-132b) is a haloalkane and a hydrochlorofluorocarbon. It is an intermediate during the production of HFC-134a. According to a 2022 report by the WMO and other agencies, it has an ODP of 0.038 and a 100-year GWP of 332. It has been detected in the atmosphere at concentrations of up to 0.17 parts per trillion, probably because of its use during the production of other chemicals. Most emissions seem to come from East Asia.