Vapor–liquid equilibria for HFC-32 containing systems

A circulation type apparatus was used to obtain vapor–liquid equilibrium data. Results are given at three temperatures for the difluoromethane (HFC-32)+1-chloro-1,1-difluoroethane (HCFC-142b) and for the difluoromethane+2,2-dichloro-1,1,1-trifluoroethane (HCFC-123) binary systems. Results are well represented with the Peng–Robinson equation of state (P-R EOS).