What is the minimum temperature at which a liquid can release enough vapors to ignite?

The flashpoint is defined as the minimum temperature at which a liquid can produce enough vapor to form an ignitable mixture with air. At this temperature, the vapor concentration near the liquid's surface reaches a level that can be ignited by an ignition source, resulting in a potential fire hazard. Understanding flashpoints is crucial for handling flammable liquids safely, as it helps in identifying the risk of fire under various temperature conditions.

The other terms listed have different meanings. The ignition point generally refers to the temperature at which a substance will spontaneously combust without an external ignition source. The combustion point is associated with the temperature at which a substance will continue to burn once ignited. The vapor point is not a standard term used to describe the characteristics of flammable liquids.