What is the term for the lowest temperature at which a liquid produces enough vapor to sustain a continuous fire?

The term for the lowest temperature at which a liquid produces enough vapor to sustain a continuous fire is known as the flash point. The flash point is a critical concept in fire safety and hazard assessment, as it indicates when a liquid can generate flammable vapors that can ignite if an ignition source is present. Understanding the flash point is essential for handling, storing, and transporting flammable liquids to prevent fire hazards.

The other terms describe different aspects of fire and combustion. The flame point is not a standardized term commonly used in the context of fire safety. The boiling point refers to the temperature at which a liquid turns into vapor and does not specifically indicate flammability. The ignition temperature, or autoignition temperature, is the lowest temperature at which a material will ignite without an external ignition source, but it does not describe the vapor production necessary for a continuous fire. Therefore, flash point is the precise and relevant term for this scenario.