Acetylene

Acetylene is a gas dissolved in acetone under pressure with a typical smell. The gas is explosive and extremely flammable. Acetylene has different applications including in the forging during welding. In the event of welding and cutting acetylene is used together with oxygen. The achieved temperature of the flame with this is still the highest, obtained by natural combustion: up to 3200°C.

Physicochemical constants

Symbol	C2H2 (ethyne)
Molecular weight (kg/mol):	26.04
Density of the gas (kg/m3 with 1.013 bar and 0 °C)	1.172
Relative density of the gas (air=1)	0.908
Boiling point 1 bar	- 84 °C (189 K)
Vapour pressure (bar at 20 °C)	44
Ignition temperature	325 °C
Critical temperature	- 35.1 °C (308 K)
Explosion limits	2.2 – 88 vol % in air
Heat content	48.700 kJ/kg (12.000 kcal/kg)

 

Application areas

Supply forms

Cylinders

Content	Height	Diameter	Total Weight	Pressure i.r.t. temp. (bar)	Weight C2H2 (kg)
50 l	1.70 m	23 cm	90 kg	+/- 15	10
40 l	1.30 m	23 cm	75 kg	+/- 15	7.7
40 l	1.06 m	26 cm	70 kg	+/- 15	7
20 l	0.70 m	24 cm	35 kg	+/- 15	3.5
5 l	0.55 m	14 cm	13 kg	+/- 15	1

More information about our cylinders

Cylinder bundles

Content	Dimension	Weight bundle	Pressure i.r.t. temp.	Weight of the gas C2H2 in kg
9x40 l	1500x800x1640	Gross: +/- 700 kg	+/- 15 bar	Net 55 kg
12x50 l	1050x800x1950	Gross: +/- 1450 kg	+/- 15 bar	Net 108 kg

More information about our cylinder bundles

Cylinder identification

Colour (according to NBN-EN 1089):

• the ogive is painted chestnut brown RAL 3009
• the cylindrical part is painted in dark grey RAL 7031 

Stopcock connection NBN 226: connection bracket diam. 21 mm / 10 mm type D (NBN226)

Stop cock material: brass

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

Use and storage

• Keep away from sources of ignition and static discharges
• Avoid contact with pure copper, mercury, silver and brass with more than 70% Cu
• Only use equipment with the correct specifications
• Avoid back flow to the container
• Remove air from the system before introducing the gas
• Earth devices properly
• No smoking
• Wear suitable protection for hands, body and head
• Eye protection for cutting and/or welding
• Avoid gas leaks
• Apply zoning (ATEX)

Equipment

Piping systems are pressure- and product-related and must be taken care of by competent persons in observance with 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

Quality	Dissolved gas 2.5 ( 99.5 % C2H2)
Maximum impurities	H2S vol. ppm < 15 N2 vol. % < 0,4 PH3 vol. ppm < 5

Safety information

See the safety information sheet (SDS) nr: 001