Compressed air

Compressed air is a compressed gas mixture of oxygen and nitrogen. The gas mixture is used in different sectors to for example to propel engines or machines, to inflate tires but also to provide divers and firemen with breathing air. 

Physicochemical constants

Symbols	O2 and N2
Average molecular weight (g/mol)	28.96
Density of the gas (kg/m3 at 1.013 bar and 0 °C)	1.293
Boiling point 1 bar	- 194.5 °C (78.7 K)
Critical temperature	- 140.6 °C (132.5 K)

 

Application areas

Standard synthetic air:

• Industrial: propellant gas for pneumatic tools, plasma cutting, starting of diesel engines...
• medical: ventilation

Zero air: gas chromatography, coulometry

Delivery forms

Cylinders (gas)

Content	Diameter	Height	Total weight	Pressure (bar)	Quantity of Gas
50 l	22.9 cm	1.70 m	± 67 kg	200	10.0 m3
45 l	22.9 cm	1.55 m	± 65 kg	200	9.0 m3
27 l	20.4 cm	1.25 m	± 45 kg	200	5.4 m3
13 l	20.4 cm	0.70 m	± 23 kg	200	2.6 m3
10 l	14.0 cm	1.00 m	± 13 kg	200	2.0 m3
5 l	14.0 cm	0.55 m	± 10 kg	200	1.0 m3

More information about our cylinders

Cylinder bundles (gas)

Volume	Dimension	Height	Total weight	Pressure (bar)	Quantity of Gas
12x50 l	1.05 m x 0.80 m	1.99 m	± 1350 kg	200	120 m3

More information about our cylinder bundles

Cylinder identification

Synthetic air for industrial use

Colour  (according to NBN-EN 1089):

• the ogive is painted in light green RAL 6018
• the cylindrical part is painted in dark grey RAL 7031

Stop cock connection: G 3/4" - ght/external (NBN226/DIN477).

Stop cock material: brass

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

Synthetic air for medical use

Colour (according to NBN-EN 1098):

• the ogive is painted in RAL 9010 with a black band on the shoulder RAL 9005

Stop cock connection: G 3/4" - right/external (NBN226/DIN477).

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 in charge by competent people taking into consideration the current standards and legislation.

Each gas with its specific purity requires suitable material. IJsfabriek Strombeek can supply you with the appropriate material for every application such as: mufflers, flow meters, filters, valves, pressure gauges... 

Specification of the quality

Name	O2	N2	CnHm vpm	H2O vpm
Air *	21% ± 1 vol. %	79% ± 1 vol. %	≤ 10	≤ 10
Air Zero air	21% ± 1 vol. %	79% ± 1 vol. %	≤ 0.5	≤ 5

* Synthetic air: for industrial and medical use

Safety information

See the safety information sheet (SDS) nr: 000