What happens when Refrigerant-12 is passed over an open flame?

What happens when Refrigerant-12 is passed over an open flame?

• A. It burns without producing harmful gases
• B. It vaporizes quickly
• C. It changes to phosgene gas
• D. It releases refrigerant oil

Answer: (C)

When Refrigerant-12 is exposed to an open flame, it can decompose and form phosgene gas, which is a highly toxic substance. The chemical structure of Refrigerant-12, which is dichlorodifluoromethane, allows for the production of phosgene when it is subjected to high temperatures, such as those found in an open flame. Phosgene is known for its harmful effects, including respiratory issues and potential lethality in high concentrations. Understanding this reaction is crucial for safety in managing refrigerants during maintenance or disposal, as it underscores the importance of preventing exposure of refrigerants to flames or high heat sources. The other options do not accurately describe the behavior of Refrigerant-12 in such conditions. For instance, while it might vaporize quickly, that process does not occur in the context of an open flame in the same damaging way as the production of toxic gases.

When Refrigerant-12 is exposed to an open flame, it can decompose and form phosgene gas, which is a highly toxic substance. The chemical structure of Refrigerant-12, which is dichlorodifluoromethane, allows for the production of phosgene when it is subjected to high temperatures, such as those found in an open flame. Phosgene is known for its harmful effects, including respiratory issues and potential lethality in high concentrations.

Understanding this reaction is crucial for safety in managing refrigerants during maintenance or disposal, as it underscores the importance of preventing exposure of refrigerants to flames or high heat sources. The other options do not accurately describe the behavior of Refrigerant-12 in such conditions. For instance, while it might vaporize quickly, that process does not occur in the context of an open flame in the same damaging way as the production of toxic gases.