What gas can R-12 and R-22 decompose into at high temperatures?

R-12 and R-22, which are both chlorofluorocarbons (CFCs), can decompose at high temperatures to release phosgene gas. Phosgene is a toxic compound that is particularly dangerous because it can occur during the breakdown of refrigerants in situations involving fire or high heat. The presence of chlorine in these refrigerants is key, as it contributes to the formation of phosgene when these chemicals are subjected to extreme thermal conditions.

While carbon dioxide, ammonia, and chlorine can be associated with other chemical processes or reactions, they do not accurately represent the primary decomposition product of R-12 and R-22 under the same high-temperature conditions. Understanding the potential hazards of refrigerants, including their decomposition products, is crucial for safety and compliance with environmental regulations.