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Oxygen as a gas is slightly heavier than air, but will dispense fairly rapidly in a well-ventilated area. However, it can remain for long periods in cavities, trenches, pits and vessels. Oxygen will also remain for considerable periods in clothing or similar porous materials.
In combination with a fuel gas such as acetylene, hydrogen or LPG, it is used in welding, cutting, brazing, hardening, scarfing, flame cleaning and heating. Oxygen is used in the manufacture of steel, glass, ethylene oxide, methanol, acrolein, titanium dioxide, vinyl acetate and synthesis gas. It can be utilised in any chemical reaction where air is used to give faster reaction time and higher yields. Also suitable for laboratories, metal analysis and medical treatment
Oxygen is most commonly combined with a fuel gas for cutting, welding, brazing and glass blowing as it greatly enhances combustion efficiency. It is colourless, odourless and tasteless. It is slightly heavier than air but will dispense fairly rapidly in a well-ventilated area. Copper, brass and high-quality stainless steel are the most common materials used with oxygen. They should be fully degreased as oil and grease can cause ignition. Most lubricants are therefore not compatible with oxygen.
Gas cylinder size
Gaseous relative density
Liquid relative density
Components (% Vol. abs)
O2 ≥ 99,5 %
Impurities (ppm v/v)
H2O (5 bar) ≤ 200
- Oxidizing agent
- Bleaching agent
- Fuel cutting
- Silicon oxidation (semiconductor manufacturing)
- Recommandations: When handling the product avoid oxygen-enriched atmospheres (> 21%). For full and more detailed information, please consult the Material Safety Data Sheet (MSDS)..
- Hazards identification: May cause or intensify fire; Oxidizing agent Contains cooled gas; may cause cryogenic burns or injury.
- Flammability range: Supports combustion vigorously (violent reaction); may cause ignition of combustible materials
- Shipping type: Compressed gas cylinders
- Proper shipping name: Oxygen, compressed
- UN Number: 1072
- ADR Class: 2
- Classification code: 1 O
- ADR pictogram