1. With different specific gravity, LPG is heavier than air, while natural gas is lighter than air;
2. The mixture ratio and concentration of the mixture with air to achieve deflagration are different;
3. They produce different calorific values during combustion. The calorific value of high-quality liquefied gas is 22000 kcal, and the calorific value of natural gas is 8500 kcal.
4. Their composition is different. The main component of liquefied petroleum gas is propane or butane, and the natural gas is methane.
