Which hazard is associated with propane due to its higher specific gravity?

Propane's higher specific gravity compared to air means that it is denser and will accumulate in lower areas if leaked. This property is significant in safety considerations; when propane is released, it does not disperse as easily in the atmosphere as lighter gases would. Instead, it tends to settle and pool, creating an increased risk of ignition if exposed to an ignition source.

This characteristic emphasizes the importance of proper ventilation and monitoring in areas where propane is used or stored, as the accumulation of propane can lead to hazardous situations, including explosions or fire. Understanding this hazard is crucial for ensuring safety in environments where propane is present.