What are ignitable liquids?

Ignitable liquids are defined as liquids that can ignite and sustain combustion under certain conditions. The correct answer encompasses both combustible and flammable liquids, which distinguishes it as a broader category.

Flammable liquids are those that have a flash point below 100°F (37.8°C), making them capable of igniting at relatively low temperatures and are more volatile. Combustible liquids, on the other hand, have a flash point at or above 100°F (37.8°C) and can ignite but require a higher temperature to do so.

By recognizing that ignitable liquids include both flammable and combustible types, this option accurately reflects the full spectrum of liquids that pose a risk of fire based on their ignition characteristics. Understanding this distinction is crucial in fire investigations, as it influences the assessment of potential fire hazards and the safety measures that should be taken when handling these liquids.