If the vapor density is less than 1, what will happen to the vapor?

When the vapor density of a substance is less than 1, it means that the vapor is lighter than air. Due to this lower density, the vapor will rise in the atmosphere. This principle is rooted in the behavior of gases and vapors, where lighter substances tend to ascend, while heavier substances tend to descend.

Understanding vapor density is crucial for hazard assessments and response strategies in hazmat situations. If responders know that a vapor has a density less than 1, they can anticipate its movement and take appropriate precautions to safeguard the area and personnel. In contrast, vapors with a density greater than 1 would settle toward the ground, which could lead to accumulation in low-lying areas, posing different risks.