Oxygen (O2)

Oxygen is a tasteless, odourless gas that constitutes 21% of the atmosphere by volume. Oxygen is used as a respiratory gas by the healthcare industry and also has strong oxidizing properties benefiting many other industries by improving yields, optimising performance and lowering costs. Applications including combustion, oxidation and fermentation can benefit by enriching or replacing process air with oxygen. Oxygen can combine with all other elements except rare gases to oxidise them and consequently produce energy.


Contact with combustible materials may cause fire.
Safety

  • Keep container tightly closed.
  • Keep container in a well ventilated place.

Properties

U.S. Units

S.I. Units

Chemical formula

O₂

O₂

Molecular weight

31.9988

31.9988

Density of the gas at 70°F(21.1 °C)and 1atm.

0.08279 lb /ft3

1.326 kg/m3

Specific gravity of the gas at 70°F (21.1°C)and 1 atm

1.105

1.105

Specific volume of the gas at 70°F (21.1°C) and 1 atm

12.08 ft3/lb

0.7541 m3/kg

Density of the liquid at boiling point and 1 atm

71.23 lb/ft3

1141 kg/m3

Critical temperature

-181.4°F

-118.6°C

Critical pressure

731.4 psia

5043 KPa,abs

Critical density

27.23 lb/ft3

436.1 kg/m3

Boiling point at 1 atm

-297.33 °F

-182.96 °C

Freezing point

-361.8 °F

-218.78 °C

Solubility in water vol/vol at 32°F(0°C)

0.0491

0.0491

Industry

Usage

Iron and Steel

Used in high energy combustion that removes impurities.

Decarburization of hot metal to produce steel, and to enrich blast furnace air), secondary smelting.

Used in oxy-fuel furnace to enhance production.

Oil and Gas

Oxygen is used in refineries to enrich air of regeneration of Fluid Cracking Catalytic units (FCC) (up to 28 % in O2)

Welding and Cutting

Used as a heat source with acetylene or LPG's, oxygen boosts the flame properties in flame torches and burners.


Used to provide a highly effective jet for oxy-cutting carbon steels (non- and low-alloyed).

Healthcare

Oxygen (link to medical oxygen) is used in the treatment of respiratory insufficiencies, in hyperbaric oxygen chambers for the treatment of monoxide poisoning and chronic tissue damage.

Space

Propulsion of space vehicles, rocket fuel.

Paper

Paper pulp bleaching.

Petrochemical

Production of ethylene oxide.

Glass

Mainly used for glass melting and all oxy-combustion processes.

Environmental

Water purification, odour control and increasing treatment capacity in waste water treatment plants.

Electronics

Ultra-pure oxygen is used to oxidize certain materials, such as Si to SiO₂. It is also used to make ozone for oxidations or cleaning.

Agriculture

Oxygenation for fish farming.

Food and beverage

Used in a small percentage of MAP (link to MAP) mixtures to increase the shelf life of packaged food.

Chemical

Oxygen is used to improve the yield of a large number of petrochemical processes. 
O₂ can be used pure in chemical oxidation reactions such as the production of ethylene oxide (EO), propylene oxide (PO), ethylene dichloride (EDC) and also for the debottlenecking of air-based processes such as those in the production of acrylonitrile and purified terephtalic acid (PTA). 
It is also used in the production of synthesis gas (H₂/CO)

Grade

Cylinder type

Pressure (Barg)

Industrial Grade
Purity 99.5%

50L

200

40L

150

5.0
Purity > 99.999%

50L

200

40L

150

 

Specification Grade

 

Certification Specification

H₂O

CO

N₂

CO₂

CnHm

Rare Gases

5.0

< 3

<0.5

<5

<0.5

< 0.1

inc.

Supplied with certificate of analysis

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