Medical Oxygen Safety & Supply Resource Center for Health Care Facilities
Product Information: Oxygen
Oxygen is a colorless, odorless, tasteless elemental gas that supports life and combustion constitutes about one-fifth of the atmosphere (20.95% by volume and 23.2% by weight). At temperatures below –297.3 °F (–147.4 °C) and atmospheric pressure, it is a transparent, pale blue liquid that is slightly heavier than water. All elements except the inert gases combine directly with oxygen to form oxides. Oxygen is nonflammable, but it readily supports combustion. All materials that are flammable in air burn much more vigorously in oxygen. Some combustibles, such as oil and grease, are easily ignited and burn with nearly explosive violence in oxygen.