Oxygen¹ is an odorless, tasteless & colorless gas at room temperature and atmospheric pressure. Some of its more well known properties include its ability to sustain life as well as support combustion. Oxygen is used extensively in the Steel Industry and it is believed that this industry consumes up to 60% of all oxygen produced. The oxygen furnaces are responsible for a large portion of that consumption. Oxyacetylene torches are also used to cut and weld ferrous metals. Other industries include the Glass, Chemical, Aquaculture, Wastewater Management, Aeronautical, Medical including Hyperbaric and Mining Industries.

Oxygen and Oil do not mix! One should never allow components that are for use in an oxygen system to come into contact with oils, greases or other readilly combustable substances. If an oil is to be used to lubricate moving parts which are to come into contact with oxygen, then make sure it is an oxygen compatible lubricant and that it meets the EIGA (European Industrial Gases Association) or CGA (Compressed Gas Association) specifications.


Formula O2
Molecular Weight 0.031 998 8 kg
Boiling Point @ 101.325 kPa -183 °C
Absolute Density, Gas @ 101.325 kPa @ 25 °C 1.321 5 kg/l
Specific Heat Ratio, Gas @ 101.325 kPa @ 25 °C, Cp/Cv 1.414
Critical Compressibility 0.288
Critical Volume 2.294 dm3/kg
Critical Density 0.436 kg/dm3
1: Bracker, W & Mossman, A.L, 1980, “Gas Data Book”, Matheson, 562 – 563.