Alkebenzene is used alone or as an additive for which type of refrigerants?

Alkebenzene is commonly used as a lubricant in refrigeration systems and is particularly effective with certain types of refrigerants. Its use is especially noted in Chlorofluorocarbons (CFCs) and Hydrochlorofluorocarbons (HCFCs). These refrigerants require specific lubricants to ensure effective performance and to prevent issues like compressor wear or breakdown.

CFCs, which were widely used in refrigeration applications before their phase-out due to environmental concerns, are compatible with alkebenzene. Similarly, HCFCs, which were introduced as transitional refrigerants owing to their somewhat reduced ozone depletion potential compared to CFCs, also require lubricants like alkebenzene for optimal performance.

In contrast, Hydrofluorocarbons (HFCs) typically use synthetic or ester-based lubricants which may not be compatible with alkebenzene. This is due to the different properties of HFCs compared to CFCs and HCFCs, which leads to variations in how they interact with lubricating oils.

Therefore, the correct answer indicates that alkebenzene can be used with both CFCs and HCFCs, reflecting its versatility and effectiveness as a refrigerant additive in these specific