A large container of gasoline is recovered from the walk-in freezer at a restaurant owned by an arson suspect
The gasoline temperature is found to be –10ºF. The suspect claims this gasoline would be too cold to have been used as an accelerant in the arson. Describe the difference between flash point and ignition temperature and use this information to explain whether the suspect's claim is true or untrue.
What will be an ideal response?
Answer should include points such as the following:
The flash point is the lowest temperature at which a liquid gives off sufficient vapor to form a mixture with air that will support combustion. Once the flash point is reached, the fuel can be ignited by some outside source of temperature to start a fire. The ignition temperature of a fuel is always considerably higher than the flash point. The flash point of gasoline is –50ºF. If the sample gasoline at –10ºF is exposed to a high-temperature igniting source, such as a match, it will ignite. Hence, the suspect's claim is untrue.
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