... .colorless, 2.transparent, 3.non-toxic, 4.non-flammable liquefied gas under the autologous pressure. At room temperature, CFC-12 is ... colorless, transparent, non-toxic, non-flammable liquefied gas under the autologous pressure. It has excellent thermal and chemical ... be used in a various of refrigeration system, obtaining temperature range from -60°C to 10°C, and used in many ...