At what state does propane exist under pressure?

Propane, when subjected to sufficient pressure, exists in a liquid state. This phenomenon occurs due to the principles of gas behavior and phase changes. Under normal temperature and pressure conditions, propane is a gas. However, when pressurized, the molecules of propane come closer together, allowing it to condense into a liquid form.

This transition from gas to liquid is commonly utilized in various applications, such as fuel storage and transport, where propane is kept in pressurized tanks to enable easier handling and facilitate efficient energy use. In its liquid form, propane occupies significantly less volume than it does as a gas, making it practical for various uses including in thermite welding processes.

In contrast, under low temperatures or in lighter pressures, propane would remain a gas, and it would not exist as a solid or plasma in typical conditions relevant to most practical applications.