R-12, or dichlorodifluoromethane, was a prevalent refrigerant in residential and commercial cooling systems.
Key characteristics of R-12 include:
1. Chemical Composition: CCl$_2$F$_2$.
2. Sensory Properties: Colorless and odorless, it is non-flammable.
3. Stability: Chemically stable under typical operational circumstances.
4. Thermodynamic Performance: Exhibits a low boiling point and effective heat absorption.
5. Toxicity Profile: Generally safe for handling in controlled environments.
6. Material Compatibility: Non-corrosive to refrigeration system metals.
7. Environmental Impact: Possesses a high ozone depletion potential, leading to its phase-out under agreements such as the Montreal Protocol.
Its use has been discontinued in favor of more sustainable refrigerants.