Propane, butane & LPG

Propane is a gas compressed under pressure to a liquid and is colourless, odourless and flammable. Propane is heavier than air.

Propane has a lower boiling point (-42 °C) than butane and is therefore stored under a higher pressure. The boiling point of butane is about -0,5 °C, it is thus not usable in colder circumstances around this temperature.

Physicochemical constants

Symbol	C3H8
Average molecular weight (g/mol)	44.01
Density of the gas (kg/m3 at 1,013 bar and 0 °C)	2,01
Relative density of the gas (air=1)	1.56
Boiling point	-42.1 °C
Critical temperature	96.7 °C
Vapour pressure (bar at 20 °C)	8.367
Self-ignition temperature	2.2 - 9.5

1 litre liquid propane releases 270 litres gas at 15 °C and 1 bar.

Application areas

 

Delivery forms

Cylinders (under pressure, compressed to a liquid)

Content	Diameter	Height	Total weight	kg C3H8
112 l	± 375	± 1250	± 42 kg	47
91 l	± 375	± 1100	± 36 kg	39
79 l	± 375	± 1060	± 30 kg	33
50 l	± 229	± 1700	± 67 kg	21
5 l	± 130	± 600	± 9 kg	2

Also available with dip tube for liquid removal (marked by a red line on the cylindrical part and the letter P on the ogive).

More information about our cylinders

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. 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

Form	Name	CO2 vol %	CnHm vol. ppm
The gaseous state or with a dip tube (liquid)	Propane	≥ 99.5	≤ 0.5

he specifications are based on the evaporated liquid phase.

Safety information

See the safety information sheet (SDS) nr: 104 (gas compressed to liquid gas