Oxygen

Oxygen is a colourless and odourless gas. The gas is very reactive and mixes with many other elements in the form of oxides. Oxygen is present in air with 20.9% vol.

Oxygen is used on a large scale in the steel and metal processing industries. It is also an essential element in chemical processes with a guaranteed purity of at least 99.5% that is used everywhere where a gas flame for welding or cutting is needed. Oxygen plays an oxidising role in the treatment of domestic waste water and in the form of ozone (O₃) it is used for the rehabilitation of polluted soils. Most of the combustion processes (chemical industry) run using oxygen.

Physicochemical constants

Symbol	O2
Average molecular weight (kg/mol)	31.99
Density of the gas (kg/m3 at 1.013 bar en 0 °C)	1.429
Relative density of the gas (air = 1)	1.11
Boiling point 1 bar	- 183 °C (90.2 K)
Melting point 1 bar	- 218 °C (55 K)
Critical point	t = - 119 °C (154.8 K), p = 50.43 bar
Self-ignition temperature	Non-flammable

1 litre liquid oxygen releases 854 litres of gas at 15 °C and 1 bar.

Application areas

Delivery forms

Gas form - Cylinders

Content	Diameter	Height	Weight	Quantity of gas 150 bar	Quantity of gas 200 bar
						50 l	23 cm	1.70 m	+/- 75 kg	7.8 m3	10.5 m3
45 l	23 cm	1.55 m	+/- 65 kg	7.0 m3	9.5 m3
27 l	20 cm	1.00 m	+/- 45 kg	4.3 m3	5.7 m3
13 l	14 cm	1.10 m	+/- 35 kg	2.0 m3	2.1 m3
10 l	14 cm	1.00 m	+/- 30 kg	1.6 m3	2.1 m3
5 l	14 cm	0.50 m	+/- 10 kg	-	1.0 m3
1 l	8 cm	0.35 m	+/- 3 kg	-	-

More information about our cylinders

Gas form - Cylinder bundles

Content	Length	Width	Height	Total Weight	Bar	Vol.
12 bottles (45l)	1050	800	1840	+/- 1000 kg	150	80 m3
12 bottles (45l)	1050	800	1840	+/- 1000 kg	200	108 m3
12 bottles (50l)	1050	800	1990	+/- 1200 kg	200	120 m3

More information about our cylinder bundles

Liquid form (frozen)

• In vacuum insulated tanks: documentation on request
• In dewars
• In tank-containers

Feeding gas

• according to EU231/2012
• according to the HACCP-system
• E-number: E948
• quality: 2.5 food grade

Cylinder identification

Colour  (according NBN-EN 1089):

• Medical gas: the cylindrical part and the ogive are painted in white RAL 9010.
• Industrial gas: the cylindrical part is painted in dark grey RAL 7031, the ogive is painted in white RAL 9010.

Stop cock connection: G 5/8” - right / internal (NBN226/DIN477)

Stop cock material: brass

Identification: ISO-sticker with ADR-data and H -and P-sentences according CLP

Equipment

Piping systems are pressure and product-linked and the design must therefore be taken care of by competent people in observance with the current standards and legislation.

Each gas with its specific purity requires suitable material. For every application the appropriate material can be supplied such as: mufflers, flow meters, filters, valves, pressure gauges...

Specification of the quality

Cylinders (gas)

Name	O2 vol. %	H2O vol. ppm	CnHm vol. ppm	N2 vol. ppm	Ar vol. %	CO2 vol. ppm	CO vol. ppm
2.5 *	≥ 99.5	≤ 50	≤ 50	≤ 100	≤ 0.4	-	-
3.5	≥ 99.95	≤ 20	≤ 20	≤ 50	≤ 0.05	-	-
Med. O2	≥ 99.5	≤ 67	-	-	-	≤ 300	≤ 5

Med. = medical gas  

* food grade

Bulk (liquid, frozen)

Name	O2 vol. %	H2O vol. ppm	CnHm vol. ppm	N2 vol. ppm	Ar vol. %	CO2 vol. ppm	CO vol. ppm
2.5	≥ 99.5	Specification sheet at request	Specification sheet at request	Specification sheet at request	Specification sheet at request	Specification sheet at request	Specification sheet at request
Med. O2	≥ 99.5

 

The transport and the storage take place in vacuum insulated containers.

Safety information

See the safety information sheet (SDS) nr: 097A (gas) and B (liquid, frozen)