How does the specific gravity of air compare to that of propane vapor?

The comparison of specific gravity between air and propane vapor indicates that air is indeed lighter than propane vapor. Specific gravity is a measure of the relative density of a substance compared to a reference substance—in this case, air. The specific gravity of propane vapor is approximately 1.5, meaning it is heavier than air, which has a specific gravity of approximately 1.

This characteristic affects how propane vapor behaves in the atmosphere. Since propane is heavier than air, it will tend to settle in lower areas when released, which can pose safety hazards in enclosed or poorly ventilated spaces. Understanding this property is crucial for safety protocols related to the use and handling of propane, ensuring that proper ventilation is maintained and potential accumulation is prevented.

Recognizing that air is lighter than propane vapor helps in predicting the behavior of gases in various situations, especially in situations where gas leaks may occur. This foundational knowledge plays a key role in safety for both dispensing practices and general gas handling.