Is Propane a Liquid or Gas? Liquid Propane vs Gas Propane
Propane is a liquid if stored under pressure in a gas bottle or larger vessel. It is also a liquid if stored under -42°C.
Propane is a gas when released from pressure at standard temperature and pressure (STP) or normal temperature and pressure (NTP).
Both gas and liquid propane have applications but are not interchangeable. Propane liquid is LPG - Liquefied Petroleum Gas - fuel in its liquid state when under pressure or below its 42°C (-44°F) boiling point. It turns to gas above -42°C or when not under pressure.
Propane is a liquid when it is stored in a pressurised vessel. It is a gas at 0°C (32°F) and 1 atm pressure (STP) so, when released from a pressurised cylinder the propane liquid becomes gas. Propane is stored and distributed as a liquid but typically used as a gas for heating, cooking and vehicle fuel.
The pressure and temperature at which it is stored determines whether you have propane liquid or gas.
Propane is a flammable hydrocarbon with three carbon atoms and a chemical formula of C3H8. It is a gas at 0°C and 1 atm (STP) and liquefies under pressure for storage and transport. LPG-propane comes from natural gas processing and crude oil refining and is used as fuel for heating, cooking, vehicles, agriculture and industry. It is a liquid under pressure and a gas at standard temperature and pressure (STP).