Certified Safety Professional Practice Exam

Question: 1 / 445

How do combustible liquids differ from flammable liquids?

By their ignition temperature

Combustible liquids and flammable liquids are differentiated primarily by their ignition temperature, which is the minimum temperature at which a liquid gives off enough vapor to ignite in air. Flammable liquids are characterized by having a lower flash point (typically below 100°F or 37.8°C), meaning they can produce flammable vapors at relatively low temperatures. Combustible liquids, on the other hand, have a flash point above 100°F, indicating that they require higher temperatures to produce enough vapor for combustion.

Understanding this distinction is crucial in safety practices, as it influences how these liquids should be handled, stored, and transported to minimize hazards and manage risks effectively. The ignition temperature directly affects fire safety protocols and emergency response strategies in environments where these substances are present.

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By their chemical composition

By their storage requirements

By their ability to emit vapors

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