What is the minimum flashpoint for combustible liquids?

What is the minimum flashpoint for combustible liquids?

• A. 0
• B. 50
• C. 100
• D. 200

Answer: (C)

Flashpoint is the lowest temperature at which a liquid’s vapors can ignite in air with an ignition source. This threshold separates flammable from combustible liquids: flammables have flashpoints below 100°F, while combustibles have flashpoints at or above 100°F. Therefore, the minimum flashpoint for combustible liquids is 100°F. A liquid with a flashpoint of 100°F isn’t flammable at room temperature, but its vapors can ignite if heated to that temperature or higher, influencing how it’s stored and handled and what safety controls are needed.

Flashpoint is the lowest temperature at which a liquid’s vapors can ignite in air with an ignition source. This threshold separates flammable from combustible liquids: flammables have flashpoints below 100°F, while combustibles have flashpoints at or above 100°F. Therefore, the minimum flashpoint for combustible liquids is 100°F. A liquid with a flashpoint of 100°F isn’t flammable at room temperature, but its vapors can ignite if heated to that temperature or higher, influencing how it’s stored and handled and what safety controls are needed.