What is the specific gravity of propane?

The correct specific gravity of propane is 0.54 when compared to air. Specific gravity is a measure of the density of a substance compared to the density of water. A specific gravity less than 1 indicates that the substance is lighter than water, while greater than 1 indicates it is heavier than water.

Propane is commonly used as a fuel gas and its specific gravity reflects its behavior in various applications, including its tendency to rise and disperse in the atmosphere since it is lighter than air. The values presented in the other options do not accurately represent the specific gravity of propane relative to air or water. Understanding specific gravity is essential for safe handling and storage of gases to prevent hazards such as leaks or explosions, which is crucial in adherence to national fuel gas code standards.