What is the upper limit of flammability in air as a percent of vapor in air/gas mixture?

The upper limit of flammability, also known as the upper explosive limit (UEL), indicates the maximum concentration of gas or vapor in the air that can ignite and sustain combustion. For LP gas (liquefied petroleum gas), the upper limit of flammability is indeed around 9.60%.

This figure is critical for safety and handling procedures, as it guides professionals in ensuring that gas concentrations remain below this threshold to mitigate the risk of fire or explosions. Knowing the UEL allows for proper ventilation and monitoring of gas levels in various environments where LP gas is used or stored. Understanding these limitations is vital for anyone working in related fields to ensure adherence to safety regulations and practices.