What color is propane gas when it is stored in a cylinder?

Propane gas, when stored in a cylinder, is colorless. This characteristic allows it to be easily detected through the use of odorants that are added during processing. The addition of odorant is crucial for safety, as it provides a distinct smell that helps individuals identify a gas leak. While propane itself does not have color, it is important for regulatory and safety standards to ensure that users can detect its presence through smell. The correct identification of the physical properties of propane is essential for technicians working with this substance and for ensuring safe handling practices.