What is the minimum temperature at which a liquid can form an ignitable mixture with air called?

The minimum temperature at which a liquid can form an ignitable mixture with air is known as the flash point. This is a crucial concept in understanding the flammability of materials. At the flash point, the vapors released from the liquid can ignite if an ignition source is introduced.

It is an important safety consideration when handling, storing, and transporting hazardous materials, as knowing the flash point helps in assessing risks related to fire and explosion. The flash point is a key factor in defining the hazard classification of liquids. By contrast, other terms like boiling point indicate the temperature at which a liquid turns to vapor, while evaporation point refers to the process of a liquid transitioning to gas, and combustion point relates to the temperature where a substance can sustain combustion. Thus, flash point specifically provides the relevant temperature characteristic critical for understanding fire hazards associated with flammable liquids.