Is LPG lighter than air and does it rise when released?

Liquefied Petroleum Gas (LPG) is actually heavier than air. This characteristic is significant because when LPG is released, it tends to settle in low-lying areas rather than rise. This behavior poses specific safety concerns, especially in poorly ventilated spaces, as the gas can accumulate and create a risk of fire or explosion.

When considering the physical properties of gases, it’s important to understand that their behavior in the atmosphere can be influenced by various factors. While temperature can affect gas density and pressure, under standard conditions, LPG remains heavier than air. Therefore, the statement that LPG rises when released is not accurate.