Propane — what is it?
Propane is a complex chemical substance that is more than twice as heavy as air; 1 m³ of propane weighs 2.604 kg.
Its molecular formula is C₃H₈, meaning that a propane molecule consists of three carbon atoms and eight hydrogen atoms.
Its autoignition temperature is 530–588 °C.
The heat of combustion for 1 kg is 46,200 kJ (11,070 kcal).
The heat of combustion for 1 m³ is 92,000 kJ (21,795 kcal).
Combusting 1 m³ of propane requires 23.8 m³ of air.
The boiling point of liquid propane is –42 °C.
Natural gas contains only a negligible amount of propane.
