text: 1-Chloro-1,1-difluoroethane (HCFC-142b) is a haloalkane with the chemical formula CHCClF.  It belongs to the hydrochlorofluorocarbon (HCFC) family of man-made compounds that contribute significantly to both ozone depletion and global warming when released into the environment.  It is primarily used as a refrigerant where it is also  known as R-142b and by trade names including Freon-142b.