A liquid with a low flash point requires caution because it can form ignitable vapors at or near room temperature. Which statement is true?

A liquid with a low flash point requires caution because it can form ignitable vapors at or near room temperature. Which statement is true?

• A. It is not dangerous at all.
• B. It only forms vapors at extremely high temperatures.
• C. It can form ignitable vapors at room temperature.
• D. It never forms ignitable vapors.

Answer: (C)

Flash point is the lowest temperature at which a liquid can produce enough vapor to form an ignitable mixture with air. A liquid with a low flash point releases vapors readily, so those vapors can reach flammable concentrations at or near room temperature. That means, under normal conditions, there can be enough ignitable vapor present to catch fire if an ignition source is nearby. So the true statement is that it can form ignitable vapors at room temperature. This is why such liquids require extra caution around heat, sparks, flames, and proper ventilation. The other options imply no danger or require extreme heating, which isn’t consistent with the meaning of a low flash point.

Flash point is the lowest temperature at which a liquid can produce enough vapor to form an ignitable mixture with air. A liquid with a low flash point releases vapors readily, so those vapors can reach flammable concentrations at or near room temperature. That means, under normal conditions, there can be enough ignitable vapor present to catch fire if an ignition source is nearby. So the true statement is that it can form ignitable vapors at room temperature. This is why such liquids require extra caution around heat, sparks, flames, and proper ventilation. The other options imply no danger or require extreme heating, which isn’t consistent with the meaning of a low flash point.