Which of the following is not considered a physical property of refrigerants?

Corrosiveness is not classified as a physical property of refrigerants. Physical properties typically describe the characteristics of a substance under various conditions, such as how it behaves in different physical states. These include measurable attributes such as density, boiling point, and vapor pressure, which directly influence the refrigerant's performance in cooling cycles.

Density refers to the mass per unit volume of a refrigerant, which impacts how the refrigerant moves and behaves within a system. The boiling point indicates the temperature at which the refrigerant transitions from liquid to gas, essential for understanding its thermodynamic cycle. Vapor pressure is critical in determining how the refrigerant will flow and evaporate within the system at a given temperature.

In contrast, corrosiveness relates to a chemical property, indicating how a refrigerant may interact with materials in its environment, potentially causing damage over time. This characteristic, while important in selecting materials for use in refrigeration systems, does not fall under the category of physical properties.