What is the flammable range of propane?

The flammable range of propane refers to the concentration of propane in the air that can ignite and produce a fire. The correct range for propane is 2.15% to 9.60% by volume in air, meaning that when propane makes up more than 2.15% but less than 9.60% of the mixture in the air, it can ignite when exposed to a spark or flame. This range is critical for safety in applications involving propane, including its use in heating, cooking, and fueling vehicles.

Understanding the flammable range is essential in order to prevent uncontrolled fires and explosions. Monitoring environments where propane is used helps ensure concentrations stay outside of this range, thereby enhancing safety protocols for handling and storage. The other ranges provided do not accurately reflect the scientific data for propane, demonstrating the importance of having precise knowledge about flammable materials in safety practices.