High Purity Oxygen (O2) Specialty Gases
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| Purity , % | 99.995 | 99.999 | 99.9997 |
| Argon | ≤1.0 ppmv | ||
| Nitrogen | ≤25.0 ppmv | ≤5.0 ppmv | ≤1.0 ppmv |
| Carbon Dioxide | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| Carbon Monoxide | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| THC ( CH4) | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| Water | ≤2.0 ppmv | ≤0.5 ppmv | ≤0.1 ppmv |
| Argon | ≤3.0 ppmv | ≤3.0 ppmv | |
| Hydrogen | ≤1.0 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
Technical Information
| Cylinder State @ 21.1°C | Gas |
| Flammable Limits In Air | Non-flammable |
| Auto Ignition Temperature (°C ) | - |
| Molecular Weight (g/mol) | 31.999 |
| Specific gravity (air =1) | 1.105 |
| Critical Temperature ( °C ) | -118.57 |
| Critical Pressure ( psig ) | 714.4 |
Description
Oxygen is a chemical element; it has symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O2. Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.
Common uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight and diving.
Applications
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