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Synthetic natural gas

Synthetic natural gases are available in a wide range of composition. This range is listed below.
Due to respective partial pressures of the hydrocarbon components not every combination of components and molar fractions can be made at sufficient pressure.

 

PRM code

Certified component

Nominal fraction range (mol/mol)

Stability period

AZ20

CH4

60,0 - 99,9 · 10-2

36 months

 

C2H6

0,25 - 11,0 · 10-2

 

 

C3H8

0,10 - 10,0  · 10-2

 

 

i-C4H10

0,03 - 0,70  · 10-2

 

 

n-C4H10

0,03 - 0,70  · 10-2

 

 

i-C5H12

0,02 - 0,80  · 10-2

 

 

n-C5H12

0,02 - 0,80  · 10-2

 

 

n-C6H14

0,02 - 0,40  · 10-2

 

 

CO2

0,20 - 20,0  · 10-2

 

 

N2

0.10 - 20.0  · 10-2

 

 

Helium

0,05 - 0,40  · 10-2