Vapor-Liquid Equilibria for the Binary System Difluoromethane (HFC-32) + Propane (HC-290) at Seven Temperatures [(268.15, 278.15, 283.15, 288.15, 298.15, 308.15, and 318.15) K] Lee, B.G.; Yang, W.J.; Kim, J.D.; Lim, J.S.; Journal of Chemical & Engineering Data 2003, 48, 841-846