What are the flammability limits of gasoline?

The flammability limits of gasoline are indeed typically defined as 1.4% to 7.6% by volume in air. This range indicates the lower and upper concentration limits within which gasoline vapors can ignite when exposed to an ignition source.

The lower flammability limit (1.4%) refers to the minimum concentration of gasoline vapor in air necessary to sustain combustion, while the upper flammability limit (7.6%) signifies the maximum concentration beyond which there isn't enough oxygen available to support combustion.

Understanding these limits is crucial for safety measures in environments where gasoline is stored or used, as working within these limits helps to prevent accidental fire or explosion. Therefore, the accurate understanding of the flammability range is essential for professionals involved in handling or managing flammable materials like gasoline in the context of underground storage tanks.