What is the LEL range for propane?

The lower explosive limit (LEL) for propane is indeed in the range of 2.12% to 9.35%. This refers to the minimum concentration of propane in the air that can ignite and cause an explosion when an ignition source is present. Understanding LEL is crucial for safety in environments where propane is utilized, as any concentration below this range will not support combustion when exposed to a spark or flame.

The range indicates that at concentrations below 2.12%, there is insufficient propane to create a flammable mixture, while concentrations above 9.35% exceed the upper explosive limit (UEL) and become hazardous in another way—too much fuel can actually prevent combustion due to lack of necessary oxygen. Therefore, for safety regulations and monitoring in situations involving propane, it is critical to remain aware of these LEL values.